-----------------------------------------------------------------------------------------------------------
      name:  <unnamed>
       log:  C:\Imputations\Selection\forRESTAT\restatorg.log
  log type:  text
 opened on:  19 Oct 2011, 11:36:46

. 
. 
. use C:\imputations\selection\forREstat\BHrestatorg, clear

. 
. 
. /* Table 1, full sample imputation/missing rates */
. 
. 
. tab1 impute1 impute2

-> tabulation of impute1  

    impute1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |  1,310,407       70.17       70.17
          1 |    556,981       29.83      100.00
------------+-----------------------------------
      Total |  1,867,388      100.00

-> tabulation of impute2  

    impute2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |  1,272,263       68.13       68.13
          1 |    595,125       31.87      100.00
------------+-----------------------------------
      Total |  1,867,388      100.00

. tab1 impute1 impute2  [fweight = earnwt]

-> tabulation of impute1  

    impute1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 | 1.0998e+14       68.80       68.80
          1 | 4.9877e+13       31.20      100.00
------------+-----------------------------------
      Total | 1.5986e+14      100.00

-> tabulation of impute2  

    impute2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 | 1.0666e+14       66.72       66.72
          1 | 5.3195e+13       33.28      100.00
------------+-----------------------------------
      Total | 1.5986e+14      100.00

. 
. 
. /* primary analysis sample */
. 
. drop if age < 18
(38312 observations deleted)

. drop if age > 65
(45644 observations deleted)

. drop if pt
(271970 observations deleted)

. drop if enrollft == 1
(11832 observations deleted)

. 
. 
. /* Table 1, primary sample imputation/missing rates */
. 
. tab1 impute1 impute2

-> tabulation of impute1  

    impute1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |  1,043,124       69.56       69.56
          1 |    456,506       30.44      100.00
------------+-----------------------------------
      Total |  1,499,630      100.00

-> tabulation of impute2  

    impute2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |  1,008,718       67.26       67.26
          1 |    490,912       32.74      100.00
------------+-----------------------------------
      Total |  1,499,630      100.00

. tab1 impute1 impute2  [fweight = earnwt]

-> tabulation of impute1  

    impute1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 | 8.8178e+13       68.17       68.17
          1 | 4.1176e+13       31.83      100.00
------------+-----------------------------------
      Total | 1.2935e+14      100.00

-> tabulation of impute2  

    impute2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 | 8.5188e+13       65.86       65.86
          1 | 4.4166e+13       34.14      100.00
------------+-----------------------------------
      Total | 1.2935e+14      100.00

. 
. 
. table year

----------------------
     year |      Freq.
----------+-----------
       98 |    120,905
       99 |    126,269
      100 |    128,580
      101 |    136,088
      102 |    145,147
      103 |    142,438
      104 |    139,802
      105 |    141,171
      106 |    141,412
      107 |    139,990
      108 |    137,828
----------------------

. table year [aweight = wt] , contents(freq mean impute2) 

----------------------------------------
     year |         Freq.  mean(impute2)
----------+-----------------------------
       98 |       120,905        .271574
       99 |       126,269        .310023
      100 |       128,580        .332772
      101 |       136,088        .349513
      102 |       145,147        .350086
      103 |       142,438        .364065
      104 |       139,802        .360993
      105 |       141,171        .356969
      106 |       141,412        .357345
      107 |       139,990        .349116
      108 |       137,828        .345866
----------------------------------------

. 
. tab proxy impute2 [aweight = wt], row col cell

+-------------------+
| Key               |
|-------------------|
|     frequency     |
|  row percentage   |
| column percentage |
|  cell percentage  |
+-------------------+

           |        impute2
     proxy |         0          1 |     Total
-----------+----------------------+----------
         0 | 541,077.5  208,195.6 | 749,273.1 
           |     72.21      27.79 |    100.00 
           |     54.79      40.66 |     49.96 
           |     36.08      13.88 |     49.96 
-----------+----------------------+----------
         1 | 446,524.1  303,832.8 | 750,356.9 
           |     59.51      40.49 |    100.00 
           |     45.21      59.34 |     50.04 
           |     29.78      20.26 |     50.04 
-----------+----------------------+----------
     Total | 987,601.6  512,028.4 | 1,499,630 
           |     65.86      34.14 |    100.00 
           |    100.00     100.00 |    100.00 
           |     65.86      34.14 |    100.00 


. 
. gen bigprox = "self"

. replace bigprox = "spouse" if spouseprox
bigprox was str4 now str6
(452234 real changes made)

. replace bigprox = "nonspous" if nspouseprox
bigprox was str6 now str8
(290703 real changes made)

. 
. tab bigprox

    bigprox |      Freq.     Percent        Cum.
------------+-----------------------------------
   nonspous |    290,703       19.38       19.38
       self |    756,693       50.46       69.84
     spouse |    452,234       30.16      100.00
------------+-----------------------------------
      Total |  1,499,630      100.00

. 
. table bigprox [aweight = wt],  contents(mean impute2)

-------------------------
  bigprox | mean(impute2)
----------+--------------
 nonspous |       .490245
     self |       .277863
   spouse |       .346404
-------------------------

. 
. gen imonth = "other"

. replace imonth = "feb" if feb
(123985 real changes made)

. replace imonth = "march" if march
(122831 real changes made)

. tab imonth

     imonth |      Freq.     Percent        Cum.
------------+-----------------------------------
        feb |    123,985        8.27        8.27
      march |    122,831        8.19       16.46
      other |  1,252,814       83.54      100.00
------------+-----------------------------------
      Total |  1,499,630      100.00

. 
. table imonth [aweight = wt], contents(freq mean impute2)

----------------------------------------
   imonth |         Freq.  mean(impute2)
----------+-----------------------------
      feb |       123,985        .305202
    march |       122,831        .296184
    other |       1252814        .349495
----------------------------------------

. tab imonth

     imonth |      Freq.     Percent        Cum.
------------+-----------------------------------
        feb |    123,985        8.27        8.27
      march |    122,831        8.19       16.46
      other |  1,252,814       83.54      100.00
------------+-----------------------------------
      Total |  1,499,630      100.00

. 
. /* table 2, primary sample */
. 
. tab proxy spouseprox, row col cell

+-------------------+
| Key               |
|-------------------|
|     frequency     |
|  row percentage   |
| column percentage |
|  cell percentage  |
+-------------------+

           |      spouseprox
     proxy |         0          1 |     Total
-----------+----------------------+----------
         0 |   756,693          0 |   756,693 
           |    100.00       0.00 |    100.00 
           |     72.25       0.00 |     50.46 
           |     50.46       0.00 |     50.46 
-----------+----------------------+----------
         1 |   290,703    452,234 |   742,937 
           |     39.13      60.87 |    100.00 
           |     27.75     100.00 |     49.54 
           |     19.38      30.16 |     49.54 
-----------+----------------------+----------
     Total | 1,047,396    452,234 | 1,499,630 
           |     69.84      30.16 |    100.00 
           |    100.00     100.00 |    100.00 
           |     69.84      30.16 |    100.00 


. 
. tab proxy spouseprox if !female, row col cell

+-------------------+
| Key               |
|-------------------|
|     frequency     |
|  row percentage   |
| column percentage |
|  cell percentage  |
+-------------------+

           |      spouseprox
     proxy |         0          1 |     Total
-----------+----------------------+----------
         0 |   354,724          0 |   354,724 
           |    100.00       0.00 |    100.00 
           |     67.61       0.00 |     42.87 
           |     42.87       0.00 |     42.87 
-----------+----------------------+----------
         1 |   169,937    302,870 |   472,807 
           |     35.94      64.06 |    100.00 
           |     32.39     100.00 |     57.13 
           |     20.54      36.60 |     57.13 
-----------+----------------------+----------
     Total |   524,661    302,870 |   827,531 
           |     63.40      36.60 |    100.00 
           |    100.00     100.00 |    100.00 
           |     63.40      36.60 |    100.00 


. tab proxy spouseprox if female, row col cell

+-------------------+
| Key               |
|-------------------|
|     frequency     |
|  row percentage   |
| column percentage |
|  cell percentage  |
+-------------------+

           |      spouseprox
     proxy |         0          1 |     Total
-----------+----------------------+----------
         0 |   401,969          0 |   401,969 
           |    100.00       0.00 |    100.00 
           |     76.90       0.00 |     59.81 
           |     59.81       0.00 |     59.81 
-----------+----------------------+----------
         1 |   120,766    149,364 |   270,130 
           |     44.71      55.29 |    100.00 
           |     23.10     100.00 |     40.19 
           |     17.97      22.22 |     40.19 
-----------+----------------------+----------
     Total |   522,735    149,364 |   672,099 
           |     77.78      22.22 |    100.00 
           |    100.00     100.00 |    100.00 
           |     77.78      22.22 |    100.00 


. 
. 
. 
. 
. /* appendix table A1: weighted means by response status */
. 
. 
. sort impute2 

. 
. by impute2: sum age feb march ed_elem hsdrop sch_hs sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd femal
> e white hispanic black asian size1 size2 size3 size4 size5 size6 size7 ne ma enc wnc sa esc wsc mt pac pr
> oxy feb march a_ind a_occ a_member rwage2 [aweight = wt]

-----------------------------------------------------------------------------------------------------------
-> impute2 = 0

    Variable |     Obs      Weight        Mean   Std. Dev.       Min        Max
-------------+-----------------------------------------------------------------
         age | 1.0e+06   709902769    39.50163   11.34462         18         65
         feb | 1.0e+06   709902769     .086731   .2814405          0          1
       march | 1.0e+06   709902769    .0885434   .2840837          0          1
     ed_elem | 1.0e+06   709902769    .0346875   .1829871          0          1
      hsdrop | 1.0e+06   709902769    .0654358   .2472934          0          1
-------------+-----------------------------------------------------------------
      sch_hs | 1.0e+06   709902769    .2703343   .4441327          0          1
    sch_some | 1.0e+06   709902769    .1857122   .3888745          0          1
    ed_assoc | 1.0e+06   709902769    .0964198   .2951662          0          1
      sch_ba | 1.0e+06   709902769    .2119962   .4087224          0          1
      sch_ma | 1.0e+06   709902769    .0786643   .2692142          0          1
-------------+-----------------------------------------------------------------
     sch_pro | 1.0e+06   709902769    .0140588   .1177333          0          1
     sch_phd | 1.0e+06   709902769    .0138279   .1167762          0          1
      female | 1.0e+06   709902769    .4395302   .4963302          0          1
       white | 1.0e+06   709902769    .7095749   .4539588          0          1
    hispanic | 1.0e+06   709902769    .1368744   .3437149          0          1
-------------+-----------------------------------------------------------------
       black | 1.0e+06   709902769    .1007213   .3009594          0          1
       asian | 1.0e+06   709902769    .0392572   .1942064          0          1
       size1 | 1.0e+06   709902769    .2026269    .401957          0          1
       size2 | 1.0e+06   709902769    .0633322   .2435596          0          1
       size3 | 1.0e+06   709902769    .0920104   .2890407          0          1
-------------+-----------------------------------------------------------------
       size4 | 1.0e+06   709902769    .1046038   .3060423          0          1
       size5 | 1.0e+06   709902769     .186895   .3898274          0          1
       size6 | 1.0e+06   709902769    .1307763   .3371557          0          1
       size7 | 1.0e+06   709902769    .2197555   .4140811          0          1
          ne | 1.0e+06   709902769    .0458885   .2092435          0          1
-------------+-----------------------------------------------------------------
          ma | 1.0e+06   709902769    .1199543   .3249082          0          1
         enc | 1.0e+06   709902769    .1582756   .3649994          0          1
         wnc | 1.0e+06   709902769    .0778647   .2679586          0          1
          sa | 1.0e+06   709902769    .1862066   .3892735          0          1
         esc | 1.0e+06   709902769    .0575889   .2329646          0          1
-------------+-----------------------------------------------------------------
         wsc | 1.0e+06   709902769    .1180304   .3226443          0          1
          mt | 1.0e+06   709902769     .075038   .2634528          0          1
         pac | 1.0e+06   709902769     .161153   .3676722          0          1
       proxy | 1.0e+06   709902769    .4521298   .4977034          0          1
         feb | 1.0e+06   709902769     .086731   .2814405          0          1
-------------+-----------------------------------------------------------------
       march | 1.0e+06   709902769    .0885434   .2840837          0          1
      a_ind3 | 1.0e+06   709902769    .0062365   .0787246          0          1
      a_occ3 | 1.0e+06   709902769    .0073131   .0852034          0          1
    a_member | 1.0e+06   709902769    .0053319   .0728252          0          1
      rwage2 | 1.0e+06   709902769     21.5903   15.94063    3.00564   149.9959

-----------------------------------------------------------------------------------------------------------
-> impute2 = 1

    Variable |     Obs      Weight        Mean   Std. Dev.       Min        Max
-------------+-----------------------------------------------------------------
         age |  490912   368053629    40.55622   11.56987         18         65
         feb |  490912   368053629    .0734835   .2609288          0          1
       march |  490912   368053629    .0718697   .2582723          0          1
     ed_elem |  490912   368053629    .0322438   .1766471          0          1
      hsdrop |  490912   368053629    .0653678   .2471739          0          1
-------------+-----------------------------------------------------------------
      sch_hs |  490912   368053629     .312474   .4635024          0          1
    sch_some |  490912   368053629    .1845502   .3879326          0          1
    ed_assoc |  490912   368053629    .0923015   .2894514          0          1
      sch_ba |  490912   368053629    .1971189   .3978233          0          1
      sch_ma |  490912   368053629    .0641845   .2450815          0          1
-------------+-----------------------------------------------------------------
     sch_pro |  490912   368053629    .0149739   .1214483          0          1
     sch_phd |  490912   368053629    .0111397   .1049555          0          1
      female |  490912   368053629    .4324746   .4954198          0          1
       white |  490912   368053629    .6639361   .4723615          0          1
    hispanic |  490912   368053629    .1229807   .3284154          0          1
-------------+-----------------------------------------------------------------
       black |  490912   368053629    .1526318   .3596326          0          1
       asian |  490912   368053629    .0487387   .2153214          0          1
       size1 |  490912   368053629    .1714427   .3768958          0          1
       size2 |  490912   368053629    .0507764   .2195411          0          1
       size3 |  490912   368053629    .0848934   .2787233          0          1
-------------+-----------------------------------------------------------------
       size4 |  490912   368053629     .097655    .296848          0          1
       size5 |  490912   368053629      .17903   .3833778          0          1
       size6 |  490912   368053629    .1361659    .342965          0          1
       size7 |  490912   368053629    .2800364   .4490172          0          1
          ne |  490912   368053629    .0544042   .2268137          0          1
-------------+-----------------------------------------------------------------
          ma |  490912   368053629    .1663194   .3723674          0          1
         enc |  490912   368053629    .1636802   .3699855          0          1
         wnc |  490912   368053629     .054829   .2276465          0          1
          sa |  490912   368053629    .2068906   .4050768          0          1
         esc |  490912   368053629    .0607953   .2389547          0          1
-------------+-----------------------------------------------------------------
         wsc |  490912   368053629    .1004492   .3005982          0          1
          mt |  490912   368053629      .04854   .2149046          0          1
         pac |  490912   368053629    .1440922   .3511835          0          1
       proxy |  490912   368053629    .5933906   .4912013          0          1
      a_ind3 |  490912   368053629    .0776653   .2676444          0          1
-------------+-----------------------------------------------------------------
      a_occ3 |  490912   368053629    .0856045   .2797794          0          1
    a_member |  490912   368053629    .1658448   .3719417          0          1
      rwage2 |  490912   368053629    20.67001   14.77642   3.002287   149.9123


. 
. 
. /* Table 3 and appendix table A2, primary sample */
. 
. gen responder = 1 - impute2

. 
. dprobit responder feb march nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc s
> ch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian other for_nonctz fo
> r_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt 
> pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc
> 05-_mocc10 year99-year108 if !female

Iteration 0:   log likelihood = -525310.09
Iteration 1:   log likelihood = -501156.01
Iteration 2:   log likelihood = -501092.77
Iteration 3:   log likelihood = -501092.77

Probit regression, reporting marginal effects           Number of obs = 827531
                                                        LR chi2(98)   =48434.65
                                                        Prob > chi2   = 0.0000
Log likelihood = -501092.77                             Pseudo R2     = 0.0461

------------------------------------------------------------------------------
respon~r |      dF/dx   Std. Err.      z    P>|z|     x-bar  [    95% C.I.   ]
---------+--------------------------------------------------------------------
     feb*|   .0434117    .001842    22.92   0.000   .082315   .039802  .047022
   march*|   .0500178   .0018406    26.29   0.000   .081377    .04641  .053625
nspous~x*|  -.2376483   .0016428  -147.17   0.000   .205354  -.240868 -.234428
spouse~x*|  -.0617602   .0013954   -44.60   0.000   .365992  -.064495 -.059025
 ed_elem*|   .0455945   .0030351    14.54   0.000   .036979   .039646  .051543
   sch_9*|   .0517795   .0041279    12.05   0.000   .015377   .043689   .05987
  sch_10*|    .037601   .0037389     9.79   0.000   .018874   .030273  .044929
  sch_11*|   .0319375   .0033616     9.29   0.000    .02412   .025349  .038526
  sch_12*|   .0013478    .004714     0.29   0.775   .012566  -.007891  .010587
sch_some*|    .014478    .001559     9.23   0.000   .177255   .011422  .017534
ed_assoc*|   .0145998   .0020011     7.24   0.000   .089024   .010678  .018522
  sch_ba*|   .0120923   .0017348     6.94   0.000   .200196   .008692  .015492
  sch_ma*|   .0323429   .0024553    12.91   0.000   .068256   .027531  .037155
 sch_pro*|  -.0312582   .0045706    -6.95   0.000     .0166  -.040216   -.0223
 sch_phd*|   .0299563   .0043928     6.68   0.000   .016455   .021347  .038566
     exp |  -.0082831   .0008401    -9.86   0.000   20.5359   -.00993 -.006637
   expsq |   .0001666   .0000721     2.31   0.021   550.574   .000025  .000308
  expcub |  -1.12e-06   2.36e-06    -0.47   0.636   16780.9  -5.7e-06  3.5e-06
 expquar |  -1.54e-08   2.58e-08    -0.60   0.551    553767  -6.6e-08  3.5e-08
    _msp*|   .0050357   .0017657     2.85   0.004    .62768   .001575  .008496
   _mnsp*|   .0227457   .0019571    11.49   0.000   .128102    .01891  .026582
hispanic*|   .0189701   .0021006     8.94   0.000   .120711   .014853  .023087
   black*|  -.0833026   .0021557   -39.83   0.000   .077116  -.087528 -.079078
   asian*|  -.0568676   .0032378   -18.01   0.000   .039235  -.063214 -.050522
   other*|   .0153848   .0040324     3.78   0.000   .017476   .007481  .023288
for_no~z*|   .0226573   .0023223     9.63   0.000   .091298   .018106  .027209
 for_ctz*|  -.0093219   .0027481    -3.41   0.001   .048126  -.014708 -.003936
pub_fe~l*|  -.0359998   .0032873   -11.15   0.000   .035502  -.042443 -.029557
pub_st~e*|  -.0004356   .0030728    -0.14   0.887   .042104  -.006458  .005587
pub_lo~l*|  -.0068151   .0026504    -2.58   0.010   .068403   -.01201  -.00162
  member*|   .0081438   .0015749     5.15   0.000   .157052   .005057  .011231
   size2*|   .0038899   .0022805     1.70   0.089   .070086   -.00058   .00836
   size3*|  -.0191997   .0021531    -9.00   0.000    .08532   -.02342  -.01498
   size4*|  -.0283354   .0020223   -14.19   0.000   .106499  -.032299 -.024372
   size5*|  -.0265167    .001755   -15.26   0.000   .168913  -.029956 -.023077
   size6*|  -.0469142   .0021209   -22.55   0.000   .105735  -.051071 -.042757
   size7*|  -.0711277   .0019221   -37.75   0.000   .204223  -.074895  -.06736
      ma*|   -.039081   .0024196   -16.42   0.000   .110479  -.043823 -.034339
     enc*|  -.0031018   .0022028    -1.41   0.159   .134331  -.007419  .001216
     wnc*|   .0728922   .0021633    32.10   0.000   .110764   .068652  .077132
      sa*|  -.0062805   .0021381    -2.95   0.003   .167886  -.010471  -.00209
     esc*|  -.0194337   .0029965    -6.55   0.000   .047742  -.025307 -.013561
     wsc*|   .0369286   .0024513    14.72   0.000   .082538   .032124  .041733
      mt*|   .0901796   .0021246    39.85   0.000   .115315   .086015  .094344
     pac*|   .0420395   .0021735    18.90   0.000   .133642   .037779    .0463
   _bi01*|   .0045716   .0089536     0.51   0.611    .00873  -.012977   .02212
   _bi02*|  -.0335102   .0080251    -4.25   0.000   .005073  -.049239 -.017781
   _bi03*|  -.0242815    .003263    -7.54   0.000   .043973  -.030677 -.017886
   _bi05*|  -.0271191   .0033657    -8.17   0.000   .038614  -.033716 -.020522
   _bi06*|    .006024   .0039857     1.51   0.132   .023812  -.001788  .013836
   _bi07*|   .0021113   .0030815     0.68   0.494   .055808  -.003928  .008151
   _bi08*|   -.031113   .0042587    -7.43   0.000   .021058   -.03946 -.022766
   _bi09*|  -.0082989   .0034394    -2.42   0.015   .031515   -.01504 -.001558
   _bi10*|  -.0183737    .006743    -2.75   0.006   .007253   -.03159 -.005158
   _bi11*|   -.010713   .0074066    -1.46   0.145   .005597   -.02523  .003804
   _bi12*|  -.0178958   .0033887    -5.33   0.000   .039445  -.024537 -.011254
   _mi01*|  -.0066913   .0097998    -0.69   0.493   .007302  -.025899  .012516
   _mi02*|  -.0080993    .006777    -1.20   0.230   .007047  -.021382  .005183
   _mi03*|  -.0107091   .0035349    -3.05   0.002   .063073  -.017637 -.003781
   _mi05*|   .0070658   .0027211     2.59   0.010    .08237   .001733  .012399
   _mi06*|  -.0326325   .0035044    -9.47   0.000   .035498  -.039501 -.025764
   _mi07*|  -.0161678   .0046582    -3.50   0.000   .015306  -.025298 -.007038
   _mi08*|   -.030453    .003624    -8.54   0.000    .03106  -.037556  -.02335
   _mi09*|  -.0065132   .0029373    -2.23   0.026   .051869   -.01227 -.000756
   _mi10*|  -.0163127   .0036037    -4.57   0.000   .030876  -.023376  -.00925
   _mi11*|  -.0127672   .0037722    -3.41   0.001   .031412  -.020161 -.005374
   _mi12*|  -.0301096   .0041436    -7.38   0.000   .020595  -.038231 -.021988
 _bocc01*|    .035113   .0033904    10.12   0.000   .065398   .028468  .041758
 _bocc02*|   .0456577   .0036612    12.09   0.000   .061526   .038482  .052834
 _bocc03*|    .027816   .0051473     5.30   0.000   .014501   .017727  .037905
 _bocc05*|   .0257167   .0042253     5.98   0.000   .025815   .017435  .033998
 _bocc06*|  -.1034412   .0485702    -2.21   0.027   .000132  -.198637 -.008245
 _bocc07*|  -.0185095   .0056355    -3.32   0.001   .014061  -.029555 -.007464
 _bocc08*|   .0188876   .0042145     4.43   0.000   .026777   .010627  .027148
 _bocc09*|   .0227436   .0083784     2.67   0.008   .010362   .006322  .039165
 _bocc10*|   .0226752   .0034684     6.45   0.000   .088365   .015877  .029473
 _bocc11*|   .0375339   .0042059     8.69   0.000   .032278   .029291  .045777
 _bocc12*|   .0354105   .0040043     8.63   0.000   .033555   .027562  .043259
 _bocc13*|   .0109692   .0043779     2.49   0.013   .024418   .002389   .01955
 _mocc01*|   .0498891   .0030158    16.01   0.000    .08262   .043978    .0558
 _mocc02*|   .0459181   .0031393    14.22   0.000   .101352   .039765  .052071
 _mocc03*|   .0134896   .0036106     3.71   0.000    .06234   .006413  .020566
 _mocc05*|   .0344994   .0035443     9.50   0.000   .036432   .027553  .041446
 _mocc06*|   .0405533   .0102815     3.82   0.000   .006003   .020402  .060705
 _mocc07*|   .0164366   .0040832     3.99   0.000   .062956   .008434   .02444
 _mocc08*|   .0268939    .003528     7.49   0.000   .042124   .019979  .033809
 _mocc09*|   .0378155   .0034819    10.59   0.000     .0574   .030991   .04464
 _mocc10*|   .0323124   .0033559     9.43   0.000    .05531   .025735   .03889
  year99*|  -.0445474   .0027305   -16.63   0.000    .08493  -.049899 -.039196
 year100*|  -.0660602    .002748   -24.66   0.000   .086295  -.071446 -.060674
 year101*|    -.07917   .0027309   -29.83   0.000    .09105  -.084522 -.073818
 year102*|  -.0764748   .0026915   -29.21   0.000   .096753   -.08175   -.0712
 year103*|  -.0973298   .0053807   -18.67   0.000   .094365  -.107876 -.086784
 year104*|  -.0965474   .0053896   -18.49   0.000   .093126  -.107111 -.085984
 year105*|  -.0909977   .0053818   -17.43   0.000   .094069  -.101546  -.08045
 year106*|  -.0891977   .0053753   -17.10   0.000   .094332  -.099733 -.078662
 year107*|  -.0798831   .0053564   -15.35   0.000   .092817  -.090382 -.069385
 year108*|  -.0795761   .0053649   -15.26   0.000   .090942  -.090091 -.069061
---------+--------------------------------------------------------------------
  obs. P |   .6691314
 pred. P |   .6765422  (at x-bar)
------------------------------------------------------------------------------
(*) dF/dx is for discrete change of dummy variable from 0 to 1
    z and P>|z| correspond to the test of the underlying coefficient being 0

. 
. dprobit responder feb march nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc s
> ch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian other for_nonctz fo
> r_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt 
> pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc
> 05-_mocc10 year99-year108 if female

Iteration 0:   log likelihood =  -422839.1
Iteration 1:   log likelihood = -399919.96
Iteration 2:   log likelihood = -399848.84
Iteration 3:   log likelihood = -399848.83

Probit regression, reporting marginal effects           Number of obs = 672099
                                                        LR chi2(98)   =45980.54
                                                        Prob > chi2   = 0.0000
Log likelihood = -399848.83                             Pseudo R2     = 0.0544

------------------------------------------------------------------------------
respon~r |      dF/dx   Std. Err.      z    P>|z|     x-bar  [    95% C.I.   ]
---------+--------------------------------------------------------------------
     feb*|   .0411237   .0020252    19.75   0.000   .083123   .037154  .045093
   march*|   .0460553   .0020218    22.07   0.000   .082561   .042093  .050018
nspous~x*|  -.2536906   .0017654  -146.53   0.000   .179685  -.257151  -.25023
spouse~x*|  -.0817987   .0016757   -49.90   0.000   .222235  -.085083 -.078514
 ed_elem*|   .0548038   .0042435    12.34   0.000    .01989   .046487  .063121
   sch_9*|   .0455217   .0058566     7.49   0.000   .009143   .034043     .057
  sch_10*|   .0260646   .0050057     5.11   0.000   .012977   .016254  .035876
  sch_11*|   .0268786   .0044217     5.96   0.000   .016938   .018212  .035545
  sch_12*|   .0016997   .0062491     0.27   0.786    .00856  -.010548  .013948
sch_some*|   .0126316   .0016861     7.45   0.000   .194861   .009327  .015936
ed_assoc*|    .015057   .0020629     7.24   0.000   .111153   .011014    .0191
  sch_ba*|   .0165179   .0018278     8.98   0.000   .217694   .012935    .0201
  sch_ma*|   .0397373   .0024775    15.62   0.000   .084315   .034881  .044593
 sch_pro*|   .0131894   .0053937     2.42   0.015   .012223   .002618  .023761
 sch_phd*|   .0410267   .0058166     6.82   0.000   .009795   .029626  .052427
     exp |  -.0101419   .0008993   -11.28   0.000   20.8147  -.011904 -.008379
   expsq |   .0002698   .0000784     3.44   0.001   567.301   .000116  .000423
  expcub |  -2.26e-06   2.58e-06    -0.87   0.383   17460.3  -7.3e-06  2.8e-06
 expquar |  -1.92e-08   2.84e-08    -0.68   0.498    579128  -7.5e-08  3.6e-08
    _msp*|  -.0078112   .0018369    -4.25   0.000   .544148  -.011411 -.004211
   _mnsp*|   .0190077   .0019138     9.86   0.000   .221606   .015257  .022759
hispanic*|   .0109221   .0023508     4.62   0.000   .094337   .006315   .01553
   black*|  -.0951519   .0020488   -47.98   0.000   .117279  -.099167 -.091136
   asian*|  -.0637314   .0035686   -18.39   0.000   .041051  -.070726 -.056737
   other*|  -.0067375   .0043067    -1.57   0.116   .019752  -.015178  .001703
for_no~z*|   .0311018   .0028033    10.86   0.000   .059152   .025607  .036596
 for_ctz*|   .0022205   .0029391     0.75   0.451    .05047   -.00354  .007981
pub_fe~l*|  -.0319924   .0040167    -8.11   0.000   .033752  -.039865  -.02412
pub_st~e*|  -.0097609   .0033343    -2.94   0.003   .066288  -.016296 -.003226
pub_lo~l*|   .0022686   .0030029     0.75   0.451   .115764  -.003617  .008154
  member*|   .0345814   .0018894    17.94   0.000   .130881   .030878  .038285
   size2*|   .0090555   .0025106     3.59   0.000    .07032   .004135  .013976
   size3*|  -.0191717   .0023866    -8.11   0.000   .084849  -.023849 -.014494
   size4*|  -.0287705   .0022267   -13.10   0.000   .107655  -.033135 -.024406
   size5*|  -.0278578   .0019366   -14.55   0.000   .168916  -.031654 -.024062
   size6*|  -.0460046   .0023369   -20.09   0.000    .10558  -.050585 -.041424
   size7*|  -.0725209   .0021282   -34.83   0.000   .204739  -.076692  -.06835
      ma*|  -.0406043   .0026914   -15.36   0.000   .111774  -.045879 -.035329
     enc*|  -.0039527   .0024564    -1.61   0.107   .130743  -.008767  .000862
     wnc*|   .0734238    .002375    29.36   0.000    .11329   .068769  .078079
      sa*|  -.0070159   .0023454    -3.00   0.003   .182067  -.011613 -.002419
     esc*|  -.0124093   .0032501    -3.85   0.000   .050625  -.018779 -.006039
     wsc*|   .0351504   .0026985    12.73   0.000   .083178   .029861  .040439
      mt*|   .0856894   .0023876    33.65   0.000   .105365    .08101  .090369
     pac*|   .0366036   .0024497    14.62   0.000   .125806   .031802  .041405
   _bi01*|  -.0015038   .0138032    -0.11   0.913   .002947  -.028557   .02555
   _bi02*|  -.0349243   .0222375    -1.60   0.109   .000777  -.078509   .00866
   _bi03*|  -.0287406   .0090302    -3.24   0.001   .004804   -.04644 -.011042
   _bi05*|  -.0229688   .0051439    -4.53   0.000    .01803  -.033051 -.012887
   _bi06*|   .0129107   .0058947     2.17   0.030   .011894   .001357  .024464
   _bi07*|  -.0064467   .0037822    -1.71   0.087   .058389   -.01386  .000966
   _bi08*|  -.0269631   .0039637    -6.90   0.000   .041257  -.034732 -.019194
   _bi09*|   .0041894   .0046806     0.89   0.372   .021016  -.004984  .013363
   _bi10*|  -.0158884   .0058922    -2.72   0.006   .016013  -.027437  -.00434
   _bi11*|  -.0259713    .008988    -2.93   0.003   .004828  -.043587 -.008355
   _bi12*|  -.0145873   .0031598    -4.65   0.000   .110095   -.02078 -.008394
   _mi01*|  -.0334716   .0168712    -2.02   0.043   .001835  -.066538 -.000405
   _mi02*|     .00263   .0186401     0.14   0.888   .001028  -.033904  .039164
   _mi03*|  -.0253697   .0075892    -3.39   0.001    .00753  -.040244 -.010495
   _mi05*|   .0019079    .003536     0.54   0.590   .068856  -.005023  .008838
   _mi06*|  -.0223207   .0061177    -3.70   0.000   .011317  -.034311  -.01033
   _mi07*|  -.0134605   .0056489    -2.40   0.016   .013388  -.024532 -.002389
   _mi08*|  -.0334832    .003682    -9.25   0.000   .054142    -.0407 -.026267
   _mi09*|  -.0090913    .003635    -2.51   0.012   .048384  -.016216 -.001967
   _mi10*|   -.014661   .0030832    -4.79   0.000   .125545  -.020704 -.008618
   _mi11*|  -.0095335   .0042802    -2.24   0.025   .035597  -.017923 -.001145
   _mi12*|   -.067733    .005006   -13.97   0.000   .020867  -.077545 -.057921
 _bocc01*|   .0272838   .0037453     7.16   0.000   .074238   .019943  .034624
 _bocc02*|    .010129   .0040589     2.48   0.013   .086347   .002174  .018084
 _bocc03*|   .0072849   .0054527     1.33   0.184   .018459  -.003402  .017972
 _bocc05*|  -.0056868   .0036897    -1.55   0.122   .111073  -.012919  .001545
 _bocc06*|  -.1531308    .013577   -11.77   0.000    .00279  -.179741  -.12652
 _bocc07*|    -.01556   .0106331    -1.48   0.139   .003456  -.036401  .005281
 _bocc08*|  -.0001176    .004154    -0.03   0.977   .050027  -.008259  .008024
 _bocc09*|   .0133918    .015511     0.86   0.393   .002257  -.017009  .043793
 _bocc10*|   .0264157   .0065146     3.97   0.000   .010146   .013647  .039184
 _bocc11*|   .0504577   .0051698     9.37   0.000   .021921   .040325   .06059
 _bocc12*|   .0035691   .0104252     0.34   0.733   .003444  -.016864  .024002
 _bocc13*|   .0424747   .0070414     5.83   0.000   .007493   .028674  .056276
 _mocc01*|    .045687   .0033109    13.38   0.000   .087871   .039198  .052176
 _mocc02*|   .0229165   .0034008     6.66   0.000   .176403   .016251  .029582
 _mocc03*|  -.0059417   .0039837    -1.50   0.134   .061586   -.01375  .001866
 _mocc05*|    .019807   .0031599     6.20   0.000    .13964   .013614     .026
 _mocc06*|   .0671104      .0154     4.10   0.000   .001687   .036927  .097294
 _mocc07*|   .0029313   .0137941     0.21   0.832   .001979  -.024105  .029967
 _mocc08*|   .0184765   .0119237     1.53   0.126   .002312  -.004894  .041847
 _mocc09*|   .0531661   .0044684    11.40   0.000   .029198   .044408  .061924
 _mocc10*|   .0317607   .0060806     5.10   0.000   .010463   .019843  .043678
  year99*|  -.0381945   .0030525   -12.74   0.000   .083302  -.044177 -.032212
 year100*|  -.0616342   .0030781   -20.56   0.000   .085059  -.067667 -.055601
 year101*|  -.0751274   .0030553   -25.33   0.000   .090375  -.081116 -.069139
 year102*|   -.076161   .0030135   -26.04   0.000   .096832  -.082067 -.070255
 year103*|   -.108168   .0060927   -18.40   0.000   .095742   -.12011 -.096227
 year104*|  -.1084998   .0061089   -18.41   0.000   .093345  -.120473 -.096527
 year105*|  -.1009312   .0060912   -17.16   0.000   .094221   -.11287 -.088993
 year106*|  -.0980907   .0060879   -16.68   0.000   .094255  -.110023 -.086159
 year107*|  -.0942113   .0060695   -16.06   0.000   .094005  -.106107 -.082315
 year108*|  -.0914871   .0060664   -15.59   0.000   .093098  -.103377 -.079597
---------+--------------------------------------------------------------------
  obs. P |   .6769702
 pred. P |   .6858015  (at x-bar)
------------------------------------------------------------------------------
(*) dF/dx is for discrete change of dummy variable from 0 to 1
    z and P>|z| correspond to the test of the underlying coefficient being 0

. 
. 
. /* table 4 and appendix tables A3 through A6 */
. 
. /* primary sample */
. /* men */
. 
. /*OLS */
. 
. reg lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq 
> expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz size2 size3 size4 size5 size6 siz
> e7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-_mi03
>  _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if !female

      Source |       SS       df       MS              Number of obs =  553727
-------------+------------------------------           F( 94,553632) = 5482.99
       Model |  88335.1138    94  939.735253           Prob > F      =  0.0000
    Residual |  94887.6029553632   .17139111           R-squared     =  0.4821
-------------+------------------------------           Adj R-squared =  0.4820
       Total |  183222.717553726  .330890579           Root MSE      =  .41399

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
     ed_elem |  -.1744355   .0034626   -50.38   0.000    -.1812221   -.1676489
       sch_9 |  -.1441436   .0046449   -31.03   0.000    -.1532475   -.1350398
      sch_10 |  -.1221063    .004208   -29.02   0.000    -.1303539   -.1138588
      sch_11 |  -.0986279   .0037311   -26.43   0.000    -.1059407    -.091315
      sch_12 |  -.0757381   .0052173   -14.52   0.000    -.0859639   -.0655124
    sch_some |   .0858481   .0016933    50.70   0.000     .0825293    .0891668
    ed_assoc |    .126832   .0021523    58.93   0.000     .1226136    .1310504
      sch_ba |   .3011723   .0018845   159.82   0.000     .2974788    .3048658
      sch_ma |   .4235607   .0026743   158.38   0.000     .4183191    .4288023
     sch_pro |   .7366038   .0048394   152.21   0.000     .7271186    .7460889
     sch_phd |   .6529498    .004689   139.25   0.000     .6437595      .66214
         exp |   .0446222    .000887    50.30   0.000     .0428836    .0463608
       expsq |  -.0016923    .000077   -21.98   0.000    -.0018432   -.0015414
      expcub |    .000029   2.55e-06    11.38   0.000      .000024     .000034
     expquar |  -2.07e-07   2.81e-08    -7.35   0.000    -2.62e-07   -1.51e-07
        _msp |   .1349383   .0015955    84.58   0.000     .1318112    .1380654
       _mnsp |    .040389    .002142    18.86   0.000     .0361907    .0445873
       black |  -.1545268   .0023865   -64.75   0.000    -.1592043   -.1498493
       asian |  -.0390719   .0034594   -11.29   0.000    -.0458523   -.0322915
       other |  -.0588151    .004214   -13.96   0.000    -.0670743   -.0505558
    hispanic |  -.1311022   .0022882   -57.29   0.000     -.135587   -.1266174
  for_nonctz |   -.168811   .0025868   -65.26   0.000    -.1738811   -.1637408
     for_ctz |  -.0700775   .0030632   -22.88   0.000    -.0760813   -.0640737
       size2 |   .0610198   .0023237    26.26   0.000     .0564654    .0655741
       size3 |   .0823036   .0022103    37.24   0.000     .0779714    .0866358
       size4 |   .1127266   .0020709    54.43   0.000     .1086678    .1167855
       size5 |   .1422894   .0017986    79.11   0.000     .1387642    .1458146
       size6 |   .2408836   .0021745   110.77   0.000     .2366216    .2451456
       size7 |   .2360095   .0019984   118.10   0.000     .2320928    .2399263
          ma |  -.0328118   .0026378   -12.44   0.000    -.0379818   -.0276418
         enc |  -.0436722    .002409   -18.13   0.000    -.0483937   -.0389506
         wnc |  -.0854057   .0024495   -34.87   0.000    -.0902065   -.0806048
          sa |  -.0533615    .002343   -22.78   0.000    -.0579536   -.0487694
         esc |  -.0901766   .0032265   -27.95   0.000    -.0965004   -.0838528
         wsc |  -.1132485   .0027236   -41.58   0.000    -.1185867   -.1079104
          mt |  -.0239481   .0024538    -9.76   0.000    -.0287575   -.0191387
         pac |   .0267026   .0024437    10.93   0.000      .021913    .0314922
  pub_fedall |   .0505468   .0034365    14.71   0.000     .0438115    .0572822
   pub_state |  -.2001842   .0031789   -62.97   0.000    -.2064147   -.1939537
   pub_local |  -.1770847   .0027769   -63.77   0.000    -.1825273    -.171642
      member |   .1732071   .0017075   101.44   0.000     .1698604    .1765538
       _bi01 |  -.2046241   .0091515   -22.36   0.000    -.2225607   -.1866875
       _bi02 |   .1659364   .0078547    21.13   0.000     .1505414    .1813314
       _bi03 |   .0241693   .0033716     7.17   0.000      .017561    .0307775
       _bi05 |   .0284288   .0034792     8.17   0.000     .0216097    .0352479
       _bi06 |  -.0659638   .0041666   -15.83   0.000    -.0741303   -.0577973
       _bi07 |  -.2261654   .0032425   -69.75   0.000    -.2325206   -.2198102
       _bi08 |   .0384808   .0044146     8.72   0.000     .0298284    .0471332
       _bi09 |  -.0775963   .0035819   -21.66   0.000    -.0846167   -.0705758
       _bi10 |  -.2221387   .0069768   -31.84   0.000     -.235813   -.2084643
       _bi11 |  -.1735689   .0077446   -22.41   0.000    -.1887481   -.1583897
       _bi12 |  -.1530906    .003464   -44.20   0.000    -.1598799   -.1463014
       _mi01 |  -.3090564    .010041   -30.78   0.000    -.3287363   -.2893764
       _mi02 |   .2127444   .0068805    30.92   0.000      .199259    .2262299
       _mi03 |  -.0237415   .0037474    -6.34   0.000    -.0310863   -.0163968
       _mi05 |  -.1614431   .0029216   -55.26   0.000    -.1671694   -.1557168
       _mi06 |   .0299137    .003712     8.06   0.000     .0226383    .0371891
       _mi07 |  -.0056464   .0048902    -1.15   0.248     -.015231    .0039382
       _mi08 |   .0251652   .0037984     6.63   0.000     .0177205    .0326099
       _mi09 |  -.0222104   .0030928    -7.18   0.000    -.0282722   -.0161486
       _mi10 |   -.197877   .0037858   -52.27   0.000    -.2052972   -.1904569
       _mi11 |  -.3019092   .0040471   -74.60   0.000    -.3098414   -.2939771
       _mi12 |  -.2803519   .0043962   -63.77   0.000    -.2889684   -.2717354
     _bocc01 |   .1347152   .0037535    35.89   0.000     .1273586    .1420719
     _bocc02 |   .0578263   .0040673    14.22   0.000     .0498544    .0657982
     _bocc03 |   .0436866   .0056035     7.80   0.000      .032704    .0546692
     _bocc05 |  -.1950177   .0046688   -41.77   0.000    -.2041683    -.185867
     _bocc06 |  -.4147264   .0558224    -7.43   0.000    -.5241365   -.3053163
     _bocc07 |  -.0876952   .0060041   -14.61   0.000    -.0994631   -.0759274
     _bocc08 |   -.277983   .0046466   -59.83   0.000    -.2870901   -.2688758
     _bocc09 |  -.2249979   .0089503   -25.14   0.000    -.2425402   -.2074556
     _bocc10 |  -.0685142   .0037832   -18.11   0.000     -.075929   -.0610993
     _bocc11 |  -.2100756   .0046518   -45.16   0.000     -.219193   -.2009583
     _bocc12 |  -.2008147   .0044525   -45.10   0.000    -.2095415    -.192088
     _bocc13 |  -.2547054   .0047585   -53.53   0.000    -.2640318    -.245379
     _mocc01 |   .1884101    .003478    54.17   0.000     .1815933     .195227
     _mocc02 |   .0660732   .0035795    18.46   0.000     .0590576    .0730888
     _mocc03 |  -.1764185   .0040422   -43.64   0.000     -.184341    -.168496
     _mocc05 |  -.2030454   .0040506   -50.13   0.000    -.2109844   -.1951064
     _mocc06 |  -.1562989   .0112958   -13.84   0.000    -.1784383   -.1341595
     _mocc07 |  -.0605685   .0045323   -13.36   0.000    -.0694516   -.0516854
     _mocc08 |  -.0294155   .0039832    -7.38   0.000    -.0372225   -.0216084
     _mocc09 |  -.1638334   .0039644   -41.33   0.000    -.1716034   -.1560633
     _mocc10 |  -.2167944   .0038198   -56.76   0.000     -.224281   -.2093077
      year99 |    .023866   .0026527     9.00   0.000     .0186667    .0290652
     year100 |   .0329559   .0026645    12.37   0.000     .0277336    .0381781
     year101 |   .0477056   .0026406    18.07   0.000     .0425302    .0528811
     year102 |   .0626394   .0025981    24.11   0.000     .0575473    .0677316
     year103 |   .0545309   .0053351    10.22   0.000     .0440743    .0649876
     year104 |   .0622561   .0053394    11.66   0.000     .0517911     .072721
     year105 |   .0538551   .0053421    10.08   0.000     .0433848    .0643254
     year106 |   .0517195   .0053408     9.68   0.000     .0412517    .0621873
     year107 |   .0552397   .0053428    10.34   0.000      .044768    .0657113
     year108 |    .054568   .0053528    10.19   0.000     .0440766    .0650594
       _cons |   2.436209   .0054669   445.63   0.000     2.425494    2.446924
------------------------------------------------------------------------------

. 
. predict olshat
(option xb assumed; fitted values)

. 
. /* heckman two step with proxy in exclusions */
. 
. heckman lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp ex
> psq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2 size3 size4 size5 size
> 6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-
> _mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if !fema
> le, select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba
>  sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian other for_nonctz for_ctz
>  pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt pac _
> bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_m
> occ10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    827531
(regression model with sample selection)        Censored obs       =    273804
                                                Uncensored obs     =    553727

                                                Wald chi2(94)      = 492813.47
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
     ed_elem |  -.1813174   .0035474   -51.11   0.000    -.1882702   -.1743647
       sch_9 |  -.1542148   .0047655   -32.36   0.000     -.163555   -.1448747
      sch_10 |  -.1291116   .0043097   -29.96   0.000    -.1375584   -.1206648
      sch_11 |  -.1045076   .0038215   -27.35   0.000    -.1119975   -.0970176
      sch_12 |  -.0745648   .0053298   -13.99   0.000     -.085011   -.0641187
    sch_some |    .080081   .0017406    46.01   0.000     .0766694    .0834926
    ed_assoc |   .1202627   .0022114    54.38   0.000     .1159285    .1245969
      sch_ba |    .294185   .0019386   151.75   0.000     .2903854    .2979846
      sch_ma |   .4115473   .0027618   149.01   0.000     .4061342    .4169603
     sch_pro |   .7396894   .0049462   149.55   0.000      .729995    .7493838
     sch_phd |   .6415206   .0048162   133.20   0.000      .632081    .6509602
         exp |   .0434124   .0009083    47.80   0.000     .0416323    .0451926
       expsq |  -.0015408   .0000789   -19.53   0.000    -.0016955   -.0013862
      expcub |   .0000245   2.61e-06     9.40   0.000     .0000194    .0000296
     expquar |  -1.62e-07   2.87e-08    -5.63   0.000    -2.18e-07   -1.05e-07
        _msp |   .1242713   .0016655    74.61   0.000     .1210069    .1275357
       _mnsp |   .0295867   .0022154    13.36   0.000     .0252447    .0339288
       black |  -.1351275   .0025021   -54.01   0.000    -.1400315   -.1302234
       asian |   -.024791   .0035576    -6.97   0.000    -.0317638   -.0178182
       other |  -.0609566   .0043176   -14.12   0.000    -.0694191   -.0524942
    hispanic |  -.1340401   .0023418   -57.24   0.000    -.1386299   -.1294502
  for_nonctz |  -.1725726   .0026464   -65.21   0.000    -.1777595   -.1673858
     for_ctz |  -.0674546   .0031275   -21.57   0.000    -.0735844   -.0613248
       size2 |   .0600185   .0023816    25.20   0.000     .0553506    .0646863
       size3 |   .0868812    .002267    38.32   0.000     .0824379    .0913246
       size4 |    .119055   .0021284    55.94   0.000     .1148834    .1232265
       size5 |   .1481745     .00185    80.10   0.000     .1445486    .1518004
       size6 |   .2516434   .0022484   111.92   0.000     .2472365    .2560502
       size7 |   .2526873   .0021054   120.02   0.000     .2485609    .2568138
          ma |  -.0230224   .0027088    -8.50   0.000    -.0283316   -.0177131
         enc |  -.0435219   .0024617   -17.68   0.000    -.0483468    -.038697
         wnc |   -.103862   .0025709   -40.40   0.000     -.108901   -.0988231
          sa |  -.0525119   .0023939   -21.94   0.000    -.0572039     -.04782
         esc |   -.086389   .0032988   -26.19   0.000    -.0928545   -.0799236
         wsc |  -.1235096   .0028041   -44.05   0.000    -.1290056   -.1180136
          mt |  -.0458155   .0026005   -17.62   0.000    -.0509124   -.0407185
         pac |   .0164283   .0025187     6.52   0.000     .0114918    .0213649
  pub_fedall |   .0582756    .003521    16.55   0.000     .0513747    .0651766
   pub_state |   -.200111   .0032553   -61.47   0.000    -.2064913   -.1937307
   pub_local |  -.1755462   .0028421   -61.77   0.000    -.1811167   -.1699757
      member |   .1698631    .001749    97.12   0.000     .1664351    .1732912
       _bi01 |  -.2050611   .0093785   -21.87   0.000    -.2234426   -.1866796
       _bi02 |   .1745275   .0080538    21.67   0.000     .1587424    .1903127
       _bi03 |   .0315005    .003457     9.11   0.000      .024725     .038276
       _bi05 |   .0353528   .0035656     9.91   0.000     .0283642    .0423413
       _bi06 |  -.0670204   .0042668   -15.71   0.000    -.0753831   -.0586576
       _bi07 |  -.2254335   .0033189   -67.92   0.000    -.2319385   -.2189285
       _bi08 |   .0449491   .0045193     9.95   0.000     .0360914    .0538068
       _bi09 |  -.0751756   .0036668   -20.50   0.000    -.0823624   -.0679887
       _bi10 |   -.217245   .0071407   -30.42   0.000    -.2312405   -.2032494
       _bi11 |  -.1704196    .007925   -21.50   0.000    -.1859522    -.154887
       _bi12 |  -.1490957   .0035486   -42.01   0.000    -.1560509   -.1421405
       _mi01 |  -.3065063    .010284   -29.80   0.000    -.3266626   -.2863499
       _mi02 |   .2153897   .0070491    30.56   0.000     .2015737    .2292057
       _mi03 |  -.0197551   .0038346    -5.15   0.000    -.0272709   -.0122394
       _mi05 |  -.1622703    .002989   -54.29   0.000    -.1681286   -.1564119
       _mi06 |   .0381249   .0038014    10.03   0.000     .0306742    .0455756
       _mi07 |  -.0024138    .005003    -0.48   0.629    -.0122195    .0073919
       _mi08 |   .0313612    .003888     8.07   0.000     .0237408    .0389816
       _mi09 |  -.0206768    .003165    -6.53   0.000      -.02688   -.0144736
       _mi10 |  -.1936458   .0038745   -49.98   0.000    -.2012398   -.1860519
       _mi11 |  -.2977858   .0041385   -71.96   0.000    -.3058971   -.2896745
       _mi12 |   -.272112   .0044994   -60.48   0.000    -.2809306   -.2632934
     _bocc01 |   .1260738   .0038496    32.75   0.000     .1185288    .1336188
     _bocc02 |   .0462935   .0041784    11.08   0.000     .0381041     .054483
     _bocc03 |   .0365733     .00574     6.37   0.000     .0253232    .0478235
     _bocc05 |  -.2012306   .0047794   -42.10   0.000    -.2105981   -.1918631
     _bocc06 |  -.3828727   .0567127    -6.75   0.000    -.4940275   -.2717179
     _bocc07 |  -.0828718   .0061389   -13.50   0.000    -.0949038   -.0708398
     _bocc08 |  -.2808754   .0047523   -59.10   0.000    -.2901899    -.271561
     _bocc09 |  -.2278921   .0091665   -24.86   0.000    -.2458582    -.209926
     _bocc10 |  -.0734246   .0038734   -18.96   0.000    -.0810162   -.0658329
     _bocc11 |  -.2178832   .0047671   -45.71   0.000    -.2272265   -.2085399
     _bocc12 |  -.2080738   .0045611   -45.62   0.000    -.2170133   -.1991342
     _bocc13 |  -.2547547   .0048668   -52.35   0.000    -.2642935    -.245216
     _mocc01 |   .1755306   .0035775    49.07   0.000     .1685189    .1825423
     _mocc02 |   .0539051   .0036787    14.65   0.000     .0466951    .0611152
     _mocc03 |  -.1781481     .00413   -43.13   0.000    -.1862427   -.1700534
     _mocc05 |  -.2111611   .0041473   -50.91   0.000    -.2192897   -.2030324
     _mocc06 |   -.164631   .0115704   -14.23   0.000    -.1873086   -.1419534
     _mocc07 |  -.0640524   .0046339   -13.82   0.000    -.0731346   -.0549702
     _mocc08 |  -.0355885   .0040756    -8.73   0.000    -.0435764   -.0276005
     _mocc09 |  -.1725056   .0040614   -42.47   0.000    -.1804658   -.1645454
     _mocc10 |  -.2235784   .0039093   -57.19   0.000    -.2312405   -.2159162
      year99 |   .0328444   .0027326    12.02   0.000     .0274887    .0382002
     year100 |   .0469115   .0027626    16.98   0.000      .041497     .052326
     year101 |   .0642319   .0027512    23.35   0.000     .0588396    .0696243
     year102 |   .0783146   .0027041    28.96   0.000     .0730147    .0836146
     year103 |   .0751044   .0054936    13.67   0.000     .0643371    .0858717
     year104 |   .0825703   .0054973    15.02   0.000     .0717958    .0933448
     year105 |   .0727667   .0054956    13.24   0.000     .0619955    .0835379
     year106 |   .0702154    .005493    12.78   0.000     .0594494    .0809815
     year107 |   .0719921   .0054899    13.11   0.000     .0612321     .082752
     year108 |   .0715161   .0055006    13.00   0.000     .0607352    .0822971
       _cons |   2.515221    .006095   412.67   0.000     2.503275    2.527167
-------------+----------------------------------------------------------------
select       |
         feb |   .1239785   .0054086    22.92   0.000     .1133779     .134579
       march |   .1434756   .0054567    26.29   0.000     .1327806    .1541706
 nspouseprox |   -.627738   .0042655  -147.17   0.000    -.6360982   -.6193778
  spouseprox |  -.1703555   .0038201   -44.60   0.000    -.1778426   -.1628683
     ed_elem |   .1308079   .0089993    14.54   0.000     .1131696    .1484462
       sch_9 |   .1495035   .0124113    12.05   0.000     .1251778    .1738292
      sch_10 |    .107364   .0109723     9.79   0.000     .0858587    .1288693
      sch_11 |   .0907951   .0097734     9.29   0.000     .0716397    .1099506
      sch_12 |   .0037551   .0131453     0.29   0.775    -.0220091    .0295194
    sch_some |   .0405528   .0043945     9.23   0.000     .0319398    .0491658
    ed_assoc |   .0409668   .0056608     7.24   0.000     .0298718    .0520618
      sch_ba |   .0338232    .004876     6.94   0.000     .0242665    .0433799
      sch_ma |    .091784   .0071117    12.91   0.000     .0778453    .1057226
     sch_pro |  -.0854817    .012294    -6.95   0.000    -.1095775   -.0613859
     sch_phd |    .085072   .0127423     6.68   0.000     .0600975    .1100465
         exp |  -.0230592   .0023387    -9.86   0.000    -.0276429   -.0184755
       expsq |   .0004639   .0002008     2.31   0.021     .0000703    .0008575
      expcub |  -3.12e-06   6.57e-06    -0.47   0.636     -.000016    9.77e-06
     expquar |  -4.28e-08   7.18e-08    -0.60   0.551    -1.84e-07    9.80e-08
        _msp |   .0140073   .0049076     2.85   0.004     .0043885    .0236261
       _mnsp |   .0640423   .0055759    11.49   0.000     .0531137    .0749709
    hispanic |   .0533178   .0059628     8.94   0.000     .0416308    .0650047
       black |  -.2234765   .0056112   -39.83   0.000    -.2344742   -.2124788
       asian |  -.1537707   .0085358   -18.01   0.000    -.1705005    -.137041
       other |   .0432527   .0114526     3.78   0.000      .020806    .0656994
  for_nonctz |   .0638637   .0066313     9.63   0.000     .0508665    .0768609
     for_ctz |   -.025815   .0075713    -3.41   0.001    -.0406544   -.0109756
  pub_fedall |  -.0982802   .0088145   -11.15   0.000    -.1155563   -.0810042
   pub_state |  -.0012123   .0085501    -0.14   0.887    -.0179702    .0155455
   pub_local |  -.0189026   .0073246    -2.58   0.010    -.0332585   -.0045467
      member |   .0227536   .0044165     5.15   0.000     .0140975    .0314098
       size2 |   .0108523   .0063762     1.70   0.089    -.0016448    .0233494
       size3 |  -.0529326   .0058808    -9.00   0.000    -.0644588   -.0414065
       size4 |  -.0778358   .0054857   -14.19   0.000    -.0885877   -.0670839
       size5 |  -.0730407   .0047859   -15.26   0.000    -.0824208   -.0636605
       size6 |  -.1278571   .0056707   -22.55   0.000    -.1389715   -.1167428
       size7 |  -.1934571   .0051247   -37.75   0.000    -.2035014   -.1834128
          ma |  -.1068762   .0065093   -16.42   0.000    -.1196343   -.0941182
         enc |  -.0086228   .0061149    -1.41   0.159    -.0206077    .0033622
         wnc |   .2117256   .0065949    32.10   0.000     .1987999    .2246513
          sa |  -.0174382   .0059211    -2.95   0.003    -.0290433   -.0058331
         esc |  -.0535252    .008169    -6.55   0.000    -.0695361   -.0375144
         wsc |   .1050272   .0071334    14.72   0.000     .0910459    .1190084
          mt |   .2649479   .0066478    39.85   0.000     .2519185    .2779774
         pac |   .1195726   .0063269    18.90   0.000     .1071722     .131973
       _bi01 |   .0127636   .0250713     0.51   0.611    -.0363754    .0619025
       _bi02 |  -.0914933   .0215216    -4.25   0.000    -.1336749   -.0493116
       _bi03 |  -.0667024   .0088512    -7.54   0.000    -.0840505   -.0493544
       _bi05 |  -.0743766   .0091021    -8.17   0.000    -.0922164   -.0565368
       _bi06 |   .0168323   .0111789     1.51   0.132     -.005078    .0387426
       _bi07 |   .0058845   .0085992     0.68   0.494    -.0109696    .0227386
       _bi08 |  -.0851044   .0114601    -7.43   0.000    -.1075658   -.0626431
       _bi09 |  -.0229912   .0094832    -2.42   0.015    -.0415779   -.0044045
       _bi10 |  -.0505895   .0183707    -2.75   0.006    -.0865954   -.0145835
       _bi11 |  -.0296283   .0203531    -1.46   0.145    -.0695197     .010263
       _bi12 |  -.0493208   .0092493    -5.33   0.000     -.067449   -.0311925
       _mi01 |   -.018551   .0270584    -0.69   0.493    -.0715846    .0344825
       _mi02 |  -.0224352   .0186806    -1.20   0.230    -.0590485    .0141781
       _mi03 |  -.0296399   .0097282    -3.05   0.002    -.0487069   -.0105729
       _mi05 |   .0197458   .0076337     2.59   0.010     .0047839    .0347076
       _mi06 |  -.0892374   .0094257    -9.47   0.000    -.1077114   -.0707635
       _mi07 |  -.0445792   .0127257    -3.50   0.000    -.0695212   -.0196372
       _mi08 |  -.0833566   .0097645    -8.54   0.000    -.1024946   -.0642186
       _mi09 |  -.0180656   .0081177    -2.23   0.026     -.033976   -.0021551
       _mi10 |  -.0449887   .0098492    -4.57   0.000    -.0642929   -.0256846
       _mi11 |  -.0352804   .0103493    -3.41   0.001    -.0555646   -.0149962
       _mi12 |  -.0824017   .0111607    -7.38   0.000    -.1042763   -.0605272
     _bocc01 |   .0998374   .0098606    10.12   0.000     .0805109    .1191639
     _bocc02 |    .130771   .0108172    12.09   0.000     .1095698    .1519722
     _bocc03 |   .0788797   .0148853     5.30   0.000      .049705    .1080545
     _bocc05 |   .0727886   .0121702     5.98   0.000     .0489353    .0966418
     _bocc06 |  -.2737795   .1238343    -2.21   0.027    -.5164903   -.0310688
     _bocc07 |  -.0509671   .0153558    -3.32   0.001    -.0810639   -.0208703
     _bocc08 |   .0532124   .0120221     4.43   0.000     .0296496    .0767752
     _bocc09 |    .064275   .0240547     2.67   0.008     .0171287    .1114213
     _bocc10 |   .0639208    .009906     6.45   0.000     .0445054    .0833363
     _bocc11 |   .1070869   .0123219     8.69   0.000     .0829365    .1312374
     _bocc12 |   .1008692   .0116916     8.63   0.000     .0779541    .1237844
     _bocc13 |   .0307463   .0123573     2.49   0.013     .0065266    .0549661
     _mocc01 |   .1430808   .0089364    16.01   0.000     .1255657    .1605958
     _mocc02 |   .1311779   .0092241    14.22   0.000      .113099    .1492568
     _mocc03 |   .0378464   .0102112     3.71   0.000     .0178329    .0578599
     _mocc05 |   .0981966   .0103311     9.50   0.000      .077948    .1184452
     _mocc06 |   .1161404   .0303673     3.82   0.000     .0566216    .1756592
     _mocc07 |   .0461952   .0115894     3.99   0.000     .0234804    .0689101
     _mocc08 |   .0761344   .0101658     7.49   0.000     .0562099    .0960589
     _mocc09 |   .1077601   .0101748    10.59   0.000     .0878179    .1277024
     _mocc10 |    .091751   .0097322     9.43   0.000     .0726763    .1108258
      year99 |  -.1214008   .0072992   -16.63   0.000     -.135707   -.1070946
     year100 |  -.1784746   .0072366   -24.66   0.000    -.1926581   -.1642911
     year101 |  -.2129325   .0071393   -29.83   0.000    -.2269252   -.1989397
     year102 |  -.2059696   .0070525   -29.21   0.000    -.2197923    -.192147
     year103 |  -.2602482   .0139409   -18.67   0.000     -.287572   -.2329245
     year104 |  -.2581928   .0139667   -18.49   0.000    -.2855669   -.2308186
     year105 |  -.2438122   .0139858   -17.43   0.000    -.2712239   -.2164006
     year106 |  -.2391377   .0139823   -17.10   0.000    -.2665425   -.2117329
     year107 |  -.2148253   .0139996   -15.35   0.000     -.242264   -.1873866
     year108 |  -.2139921   .0140207   -15.26   0.000    -.2414721    -.186512
       _cons |   1.039017   .0149016    69.73   0.000     1.009811    1.068224
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.1667394    .005089   -32.76   0.000    -.1767136   -.1567652
-------------+----------------------------------------------------------------
         rho |   -0.38756
       sigma |   .4302336
      lambda | -.16673943    .005089
------------------------------------------------------------------------------

. 
. /* heckman two step with proxy in main equation */
. 
. heckman lrwage2 nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma
>  sch_pro sch_phd exp expsq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2
>  size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_
> bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 
> year99-year108 if !female, select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 s
> ch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian o
> ther for_nonctz for_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc 
> wnc sa esc wsc mt pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mo
> cc01-_mocc03 _mocc05-_mocc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    827531
(regression model with sample selection)        Censored obs       =    273804
                                                Uncensored obs     =    553727

                                                Wald chi2(96)      = 493187.63
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
 nspouseprox |  -.0024179   .0067202    -0.36   0.719    -.0155891    .0107534
  spouseprox |    .008141   .0021549     3.78   0.000     .0039175    .0123644
     ed_elem |  -.1811687    .003768   -48.08   0.000    -.1885539   -.1737836
       sch_9 |  -.1541551    .004972   -31.00   0.000    -.1639002   -.1444101
      sch_10 |  -.1291556   .0044297   -29.16   0.000    -.1378377   -.1204735
      sch_11 |  -.1045084   .0039216   -26.65   0.000    -.1121947   -.0968222
      sch_12 |  -.0744479   .0053284   -13.97   0.000    -.0848915   -.0640044
    sch_some |   .0801774   .0017814    45.01   0.000     .0766859    .0836688
    ed_assoc |   .1203542   .0022415    53.69   0.000     .1159609    .1247476
      sch_ba |   .2942189   .0019595   150.15   0.000     .2903783    .2980594
      sch_ma |   .4116464   .0028833   142.77   0.000     .4059953    .4172975
     sch_pro |   .7393803   .0050149   147.44   0.000     .7295513    .7492092
     sch_phd |   .6414954   .0048744   131.60   0.000     .6319417     .651049
         exp |   .0432618   .0009435    45.85   0.000     .0414125     .045111
       expsq |  -.0015345   .0000792   -19.37   0.000    -.0016898   -.0013793
      expcub |   .0000244   2.61e-06     9.37   0.000     .0000193    .0000296
     expquar |  -1.62e-07   2.87e-08    -5.63   0.000    -2.18e-07   -1.06e-07
        _msp |    .118932   .0018938    62.80   0.000     .1152202    .1226438
       _mnsp |   .0294748   .0022759    12.95   0.000     .0250141    .0339355
       black |  -.1351446   .0034025   -39.72   0.000    -.1418134   -.1284759
       asian |  -.0242982   .0038616    -6.29   0.000    -.0318669   -.0167295
       other |  -.0607466   .0043353   -14.01   0.000    -.0692437   -.0522494
    hispanic |  -.1337485   .0023969   -55.80   0.000    -.1384464   -.1290506
  for_nonctz |  -.1722289   .0027165   -63.40   0.000    -.1775532   -.1669046
     for_ctz |  -.0669922   .0031401   -21.33   0.000    -.0731467   -.0608377
       size2 |   .0601521   .0023823    25.25   0.000      .055483    .0648213
       size3 |   .0869708    .002317    37.54   0.000     .0824295    .0915121
       size4 |   .1192199    .002245    53.10   0.000     .1148198      .12362
       size5 |   .1483283   .0019656    75.46   0.000     .1444758    .1521807
       size6 |   .2518092   .0025488    98.79   0.000     .2468136    .2568048
       size7 |   .2528379   .0028072    90.07   0.000     .2473358    .2583399
          ma |  -.0231067   .0029249    -7.90   0.000    -.0288394    -.017374
         enc |  -.0436134   .0024625   -17.71   0.000    -.0484397   -.0387871
         wnc |  -.1037819   .0031892   -32.54   0.000    -.1100326   -.0975312
          sa |  -.0525027   .0024003   -21.87   0.000    -.0572071   -.0477982
         esc |  -.0864482   .0033362   -25.91   0.000     -.092987   -.0799095
         wsc |  -.1235501   .0029718   -41.57   0.000    -.1293748   -.1177255
          mt |  -.0457002   .0035011   -13.05   0.000    -.0525623   -.0388381
         pac |   .0165171   .0027669     5.97   0.000      .011094    .0219402
  pub_fedall |   .0584482   .0036446    16.04   0.000     .0513049    .0655915
   pub_state |  -.1999422   .0032547   -61.43   0.000    -.2063213    -.193563
   pub_local |   -.175341   .0028475   -61.58   0.000     -.180922   -.1697601
      member |   .1699175   .0017605    96.52   0.000      .166467    .1733681
       _bi01 |  -.2051605   .0093754   -21.88   0.000    -.2235359    -.186785
       _bi02 |   .1740809   .0080955    21.50   0.000      .158214    .1899478
       _bi03 |   .0313225   .0035119     8.92   0.000     .0244394    .0382056
       _bi05 |   .0352188   .0036313     9.70   0.000     .0281016    .0423361
       _bi06 |  -.0670672   .0042677   -15.72   0.000    -.0754317   -.0587028
       _bi07 |  -.2254104   .0033185   -67.93   0.000    -.2319144   -.2189063
       _bi08 |   .0449469   .0045897     9.79   0.000     .0359512    .0539426
       _bi09 |  -.0752764   .0036724   -20.50   0.000    -.0824742   -.0680786
       _bi10 |  -.2172258   .0071544   -30.36   0.000    -.2312481   -.2032035
       _bi11 |  -.1704162   .0079269   -21.50   0.000    -.1859527   -.1548797
       _bi12 |  -.1490924   .0035779   -41.67   0.000     -.156105   -.1420799
       _mi01 |  -.3066267   .0102828   -29.82   0.000    -.3267806   -.2864728
       _mi02 |   .2149642   .0070495    30.49   0.000     .2011475    .2287809
       _mi03 |  -.0198756   .0038446    -5.17   0.000     -.027411   -.0123403
       _mi05 |  -.1622628   .0029944   -54.19   0.000    -.1681316   -.1563939
       _mi06 |   .0379236   .0038993     9.73   0.000     .0302812     .045566
       _mi07 |  -.0023388   .0050197    -0.47   0.641    -.0121771    .0074996
       _mi08 |   .0314848   .0039706     7.93   0.000     .0237026    .0392671
       _mi09 |  -.0206778   .0031694    -6.52   0.000    -.0268898   -.0144659
       _mi10 |  -.1935817    .003898   -49.66   0.000    -.2012217   -.1859418
       _mi11 |   -.297739   .0041502   -71.74   0.000    -.3058732   -.2896047
       _mi12 |  -.2719722   .0045671   -59.55   0.000    -.2809234   -.2630209
     _bocc01 |   .1260669   .0039606    31.83   0.000     .1183043    .1338295
     _bocc02 |   .0463918   .0043433    10.68   0.000      .037879    .0549046
     _bocc03 |     .03674   .0057843     6.35   0.000      .025403     .048077
     _bocc05 |  -.2010337   .0048283   -41.64   0.000    -.2104969   -.1915704
     _bocc06 |  -.3826743   .0567722    -6.74   0.000    -.4939459   -.2714028
     _bocc07 |  -.0828398    .006156   -13.46   0.000    -.0949053   -.0707744
     _bocc08 |  -.2807038   .0047803   -58.72   0.000     -.290073   -.2713346
     _bocc09 |   -.227788   .0091837   -24.80   0.000    -.2457877   -.2097882
     _bocc10 |  -.0733745   .0039204   -18.72   0.000    -.0810583   -.0656907
     _bocc11 |  -.2177779   .0048716   -44.70   0.000    -.2273261   -.2082296
     _bocc12 |  -.2081323   .0046577   -44.69   0.000    -.2172612   -.1990033
     _bocc13 |  -.2546022   .0048765   -52.21   0.000      -.26416   -.2450445
     _mocc01 |   .1755669   .0038334    45.80   0.000     .1680536    .1830801
     _mocc02 |   .0539939   .0038844    13.90   0.000     .0463807    .0616072
     _mocc03 |  -.1780778   .0041448   -42.96   0.000    -.1862015   -.1699542
     _mocc05 |  -.2109751   .0042526   -49.61   0.000    -.2193102   -.2026401
     _mocc06 |  -.1645559   .0116227   -14.16   0.000     -.187336   -.1417758
     _mocc07 |  -.0640549   .0046558   -13.76   0.000    -.0731802   -.0549296
     _mocc08 |  -.0355843   .0041405    -8.59   0.000    -.0436996   -.0274691
     _mocc09 |  -.1723874   .0041926   -41.12   0.000    -.1806048   -.1641701
     _mocc10 |  -.2235965   .0040096   -55.77   0.000    -.2314551   -.2157379
      year99 |   .0329689   .0029394    11.22   0.000     .0272079      .03873
     year100 |   .0469559   .0031926    14.71   0.000     .0406986    .0532132
     year101 |   .0643396   .0033701    19.09   0.000     .0577343    .0709449
     year102 |   .0783312   .0032874    23.83   0.000     .0718881    .0847744
     year103 |   .0751042   .0059941    12.53   0.000      .063356    .0868524
     year104 |   .0825097   .0059866    13.78   0.000     .0707762    .0942432
     year105 |   .0727984   .0059344    12.27   0.000     .0611671    .0844297
     year106 |   .0702604   .0059145    11.88   0.000     .0586682    .0818527
     year107 |   .0721426   .0058302    12.37   0.000     .0607156    .0835696
     year108 |   .0716967    .005837    12.28   0.000     .0602565     .083137
       _cons |   2.516052   .0072879   345.24   0.000     2.501768    2.530337
-------------+----------------------------------------------------------------
select       |
         feb |   .1239785   .0054086    22.92   0.000     .1133779     .134579
       march |   .1434756   .0054567    26.29   0.000     .1327806    .1541706
 nspouseprox |   -.627738   .0042655  -147.17   0.000    -.6360982   -.6193778
  spouseprox |  -.1703555   .0038201   -44.60   0.000    -.1778426   -.1628683
     ed_elem |   .1308079   .0089993    14.54   0.000     .1131696    .1484462
       sch_9 |   .1495035   .0124113    12.05   0.000     .1251778    .1738292
      sch_10 |    .107364   .0109723     9.79   0.000     .0858587    .1288693
      sch_11 |   .0907951   .0097734     9.29   0.000     .0716397    .1099506
      sch_12 |   .0037551   .0131453     0.29   0.775    -.0220091    .0295194
    sch_some |   .0405528   .0043945     9.23   0.000     .0319398    .0491658
    ed_assoc |   .0409668   .0056608     7.24   0.000     .0298718    .0520618
      sch_ba |   .0338232    .004876     6.94   0.000     .0242665    .0433799
      sch_ma |    .091784   .0071117    12.91   0.000     .0778453    .1057226
     sch_pro |  -.0854817    .012294    -6.95   0.000    -.1095775   -.0613859
     sch_phd |    .085072   .0127423     6.68   0.000     .0600975    .1100465
         exp |  -.0230592   .0023387    -9.86   0.000    -.0276429   -.0184755
       expsq |   .0004639   .0002008     2.31   0.021     .0000703    .0008575
      expcub |  -3.12e-06   6.57e-06    -0.47   0.636     -.000016    9.77e-06
     expquar |  -4.28e-08   7.18e-08    -0.60   0.551    -1.84e-07    9.80e-08
        _msp |   .0140073   .0049076     2.85   0.004     .0043885    .0236261
       _mnsp |   .0640423   .0055759    11.49   0.000     .0531137    .0749709
    hispanic |   .0533178   .0059628     8.94   0.000     .0416308    .0650047
       black |  -.2234765   .0056112   -39.83   0.000    -.2344742   -.2124788
       asian |  -.1537707   .0085358   -18.01   0.000    -.1705005    -.137041
       other |   .0432527   .0114526     3.78   0.000      .020806    .0656994
  for_nonctz |   .0638637   .0066313     9.63   0.000     .0508665    .0768609
     for_ctz |   -.025815   .0075713    -3.41   0.001    -.0406544   -.0109756
  pub_fedall |  -.0982802   .0088145   -11.15   0.000    -.1155563   -.0810042
   pub_state |  -.0012123   .0085501    -0.14   0.887    -.0179702    .0155455
   pub_local |  -.0189026   .0073246    -2.58   0.010    -.0332585   -.0045467
      member |   .0227536   .0044165     5.15   0.000     .0140975    .0314098
       size2 |   .0108523   .0063762     1.70   0.089    -.0016448    .0233494
       size3 |  -.0529326   .0058808    -9.00   0.000    -.0644588   -.0414065
       size4 |  -.0778358   .0054857   -14.19   0.000    -.0885877   -.0670839
       size5 |  -.0730407   .0047859   -15.26   0.000    -.0824208   -.0636605
       size6 |  -.1278571   .0056707   -22.55   0.000    -.1389715   -.1167428
       size7 |  -.1934571   .0051247   -37.75   0.000    -.2035014   -.1834128
          ma |  -.1068762   .0065093   -16.42   0.000    -.1196343   -.0941182
         enc |  -.0086228   .0061149    -1.41   0.159    -.0206077    .0033622
         wnc |   .2117256   .0065949    32.10   0.000     .1987999    .2246513
          sa |  -.0174382   .0059211    -2.95   0.003    -.0290433   -.0058331
         esc |  -.0535252    .008169    -6.55   0.000    -.0695361   -.0375144
         wsc |   .1050272   .0071334    14.72   0.000     .0910459    .1190084
          mt |   .2649479   .0066478    39.85   0.000     .2519185    .2779774
         pac |   .1195726   .0063269    18.90   0.000     .1071722     .131973
       _bi01 |   .0127636   .0250713     0.51   0.611    -.0363754    .0619025
       _bi02 |  -.0914933   .0215216    -4.25   0.000    -.1336749   -.0493116
       _bi03 |  -.0667024   .0088512    -7.54   0.000    -.0840505   -.0493544
       _bi05 |  -.0743766   .0091021    -8.17   0.000    -.0922164   -.0565368
       _bi06 |   .0168323   .0111789     1.51   0.132     -.005078    .0387426
       _bi07 |   .0058845   .0085992     0.68   0.494    -.0109696    .0227386
       _bi08 |  -.0851044   .0114601    -7.43   0.000    -.1075658   -.0626431
       _bi09 |  -.0229912   .0094832    -2.42   0.015    -.0415779   -.0044045
       _bi10 |  -.0505895   .0183707    -2.75   0.006    -.0865954   -.0145835
       _bi11 |  -.0296283   .0203531    -1.46   0.145    -.0695197     .010263
       _bi12 |  -.0493208   .0092493    -5.33   0.000     -.067449   -.0311925
       _mi01 |   -.018551   .0270584    -0.69   0.493    -.0715846    .0344825
       _mi02 |  -.0224352   .0186806    -1.20   0.230    -.0590485    .0141781
       _mi03 |  -.0296399   .0097282    -3.05   0.002    -.0487069   -.0105729
       _mi05 |   .0197458   .0076337     2.59   0.010     .0047839    .0347076
       _mi06 |  -.0892374   .0094257    -9.47   0.000    -.1077114   -.0707635
       _mi07 |  -.0445792   .0127257    -3.50   0.000    -.0695212   -.0196372
       _mi08 |  -.0833566   .0097645    -8.54   0.000    -.1024946   -.0642186
       _mi09 |  -.0180656   .0081177    -2.23   0.026     -.033976   -.0021551
       _mi10 |  -.0449887   .0098492    -4.57   0.000    -.0642929   -.0256846
       _mi11 |  -.0352804   .0103493    -3.41   0.001    -.0555646   -.0149962
       _mi12 |  -.0824017   .0111607    -7.38   0.000    -.1042763   -.0605272
     _bocc01 |   .0998374   .0098606    10.12   0.000     .0805109    .1191639
     _bocc02 |    .130771   .0108172    12.09   0.000     .1095698    .1519722
     _bocc03 |   .0788797   .0148853     5.30   0.000      .049705    .1080545
     _bocc05 |   .0727886   .0121702     5.98   0.000     .0489353    .0966418
     _bocc06 |  -.2737795   .1238343    -2.21   0.027    -.5164903   -.0310688
     _bocc07 |  -.0509671   .0153558    -3.32   0.001    -.0810639   -.0208703
     _bocc08 |   .0532124   .0120221     4.43   0.000     .0296496    .0767752
     _bocc09 |    .064275   .0240547     2.67   0.008     .0171287    .1114213
     _bocc10 |   .0639208    .009906     6.45   0.000     .0445054    .0833363
     _bocc11 |   .1070869   .0123219     8.69   0.000     .0829365    .1312374
     _bocc12 |   .1008692   .0116916     8.63   0.000     .0779541    .1237844
     _bocc13 |   .0307463   .0123573     2.49   0.013     .0065266    .0549661
     _mocc01 |   .1430808   .0089364    16.01   0.000     .1255657    .1605958
     _mocc02 |   .1311779   .0092241    14.22   0.000      .113099    .1492568
     _mocc03 |   .0378464   .0102112     3.71   0.000     .0178329    .0578599
     _mocc05 |   .0981966   .0103311     9.50   0.000      .077948    .1184452
     _mocc06 |   .1161404   .0303673     3.82   0.000     .0566216    .1756592
     _mocc07 |   .0461952   .0115894     3.99   0.000     .0234804    .0689101
     _mocc08 |   .0761344   .0101658     7.49   0.000     .0562099    .0960589
     _mocc09 |   .1077601   .0101748    10.59   0.000     .0878179    .1277024
     _mocc10 |    .091751   .0097322     9.43   0.000     .0726763    .1108258
      year99 |  -.1214008   .0072992   -16.63   0.000     -.135707   -.1070946
     year100 |  -.1784746   .0072366   -24.66   0.000    -.1926581   -.1642911
     year101 |  -.2129325   .0071393   -29.83   0.000    -.2269252   -.1989397
     year102 |  -.2059696   .0070525   -29.21   0.000    -.2197923    -.192147
     year103 |  -.2602482   .0139409   -18.67   0.000     -.287572   -.2329245
     year104 |  -.2581928   .0139667   -18.49   0.000    -.2855669   -.2308186
     year105 |  -.2438122   .0139858   -17.43   0.000    -.2712239   -.2164006
     year106 |  -.2391377   .0139823   -17.10   0.000    -.2665425   -.2117329
     year107 |  -.2148253   .0139996   -15.35   0.000     -.242264   -.1873866
     year108 |  -.2139921   .0140207   -15.26   0.000    -.2414721    -.186512
       _cons |   1.039017   .0149016    69.73   0.000     1.009811    1.068224
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.1656776   .0192128    -8.62   0.000     -.203334   -.1280213
-------------+----------------------------------------------------------------
         rho |   -0.38529
       sigma |  .43001256
      lambda | -.16567763   .0192128
------------------------------------------------------------------------------

. 
. predict selecthat
(option xb assumed; fitted values)

. 
. 
. /* women */
. 
. /*OLS */
. 
. reg lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq 
> expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz size2 size3 size4 size5 size6 siz
> e7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-_mi03
>  _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if female

      Source |       SS       df       MS              Number of obs =  454991
-------------+------------------------------           F( 94,454896) = 4338.36
       Model |  57839.6405    94  615.315324           Prob > F      =  0.0000
    Residual |  64518.5707454896  .141831475           R-squared     =  0.4727
-------------+------------------------------           Adj R-squared =  0.4726
       Total |  122358.211454990  .268925056           Root MSE      =  .37661

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
     ed_elem |  -.1665253   .0044901   -37.09   0.000    -.1753257    -.157725
       sch_9 |  -.1591737   .0059706   -26.66   0.000     -.170876   -.1474714
      sch_10 |  -.1450823   .0050968   -28.47   0.000    -.1550719   -.1350927
      sch_11 |  -.1148047   .0044596   -25.74   0.000    -.1235453   -.1060641
      sch_12 |  -.0719376   .0063505   -11.33   0.000    -.0843845   -.0594907
    sch_some |   .0916089   .0016738    54.73   0.000     .0883282    .0948895
    ed_assoc |   .1718827   .0020419    84.18   0.000     .1678806    .1758848
      sch_ba |   .3308029   .0018147   182.29   0.000     .3272461    .3343598
      sch_ma |   .4947693   .0024758   199.84   0.000     .4899167    .4996218
     sch_pro |   .7586005   .0053098   142.87   0.000     .7481934    .7690076
     sch_phd |   .7230358   .0057387   125.99   0.000     .7117882    .7342834
         exp |   .0477249   .0008525    55.99   0.000     .0460541    .0493957
       expsq |  -.0023545   .0000754   -31.23   0.000    -.0025023   -.0022068
      expcub |   .0000537   2.51e-06    21.37   0.000     .0000488    .0000587
     expquar |  -4.67e-07   2.79e-08   -16.74   0.000    -5.22e-07   -4.12e-07
        _msp |   .0309383   .0015979    19.36   0.000     .0278064    .0340702
       _mnsp |   .0036971   .0018791     1.97   0.049     .0000141      .00738
       black |   -.090741   .0020298   -44.70   0.000    -.0947194   -.0867626
       asian |  -.0194289   .0034614    -5.61   0.000    -.0262131   -.0126446
       other |  -.0389083   .0040233    -9.67   0.000    -.0467939   -.0310227
    hispanic |  -.0968461   .0022969   -42.16   0.000    -.1013479   -.0923442
  for_nonctz |  -.1621731   .0028999   -55.92   0.000    -.1678569   -.1564894
     for_ctz |   -.055433   .0030408   -18.23   0.000    -.0613929   -.0494732
       size2 |   .0644522   .0023145    27.85   0.000     .0599158    .0689886
       size3 |   .0918868    .002213    41.52   0.000     .0875494    .0962243
       size4 |    .121617   .0020648    58.90   0.000       .11757     .125664
       size5 |   .1565344   .0017962    87.15   0.000     .1530139     .160055
       size6 |   .2554573   .0021767   117.36   0.000     .2511911    .2597235
       size7 |   .2540123   .0019985   127.10   0.000     .2500953    .2579293
          ma |  -.0328886   .0026331   -12.49   0.000    -.0380495   -.0277278
         enc |  -.0622909   .0024183   -25.76   0.000    -.0670307    -.057551
         wnc |  -.0908381   .0024337   -37.33   0.000     -.095608   -.0860682
          sa |  -.0660619   .0023215   -28.46   0.000     -.070612   -.0615119
         esc |  -.1187399    .003165   -37.52   0.000    -.1249432   -.1125366
         wsc |  -.1407531   .0027189   -51.77   0.000    -.1460821    -.135424
          mt |  -.0486757   .0024924   -19.53   0.000    -.0535607   -.0437907
         pac |   .0225503    .002483     9.08   0.000     .0176837    .0274169
  pub_fedall |   .0919521   .0038089    24.14   0.000     .0844868    .0994175
   pub_state |  -.1592141   .0031319   -50.84   0.000    -.1653524   -.1530758
   pub_local |  -.1902512   .0028721   -66.24   0.000    -.1958804   -.1846219
      member |   .1187182   .0018783    63.21   0.000     .1150369    .1223996
       _bi01 |  -.2347776   .0125222   -18.75   0.000    -.2593206   -.2102345
       _bi02 |    .142841   .0194892     7.33   0.000     .1046428    .1810393
       _bi03 |  -.0404537   .0083389    -4.85   0.000    -.0567976   -.0241098
       _bi05 |   .0309305    .004813     6.43   0.000     .0214972    .0403638
       _bi06 |  -.0633675   .0055796   -11.36   0.000    -.0743034   -.0524317
       _bi07 |  -.2653427   .0035667   -74.39   0.000    -.2723333   -.2583521
       _bi08 |  -.0261402   .0036996    -7.07   0.000    -.0333913   -.0188891
       _bi09 |  -.0869518   .0044455   -19.56   0.000    -.0956648   -.0782388
       _bi10 |  -.1853142   .0055149   -33.60   0.000    -.1961232   -.1745053
       _bi11 |  -.1912158   .0084107   -22.73   0.000    -.2077005   -.1747312
       _bi12 |  -.1278327   .0029603   -43.18   0.000    -.1336347   -.1220307
       _mi01 |   -.229387   .0155464   -14.75   0.000    -.2598575   -.1989164
       _mi02 |   .1610095   .0169708     9.49   0.000     .1277473    .1942717
       _mi03 |  -.0582453    .007244    -8.04   0.000    -.0724433   -.0440473
       _mi05 |  -.2011629   .0034415   -58.45   0.000    -.2079081   -.1944177
       _mi06 |  -.0113992   .0059211    -1.93   0.054    -.0230044     .000206
       _mi07 |   .0042734   .0054178     0.79   0.430    -.0063453    .0148921
       _mi08 |  -.0380929    .003486   -10.93   0.000    -.0449253   -.0312605
       _mi09 |   -.054888   .0034874   -15.74   0.000    -.0617232   -.0480527
       _mi10 |  -.1441566   .0029368   -49.09   0.000    -.1499127   -.1384005
       _mi11 |  -.2661818   .0041778   -63.71   0.000    -.2743702   -.2579933
       _mi12 |  -.2235593   .0048021   -46.55   0.000    -.2329713   -.2141473
     _bocc01 |   .1527586   .0036941    41.35   0.000     .1455183    .1599989
     _bocc02 |    .094771   .0039153    24.21   0.000     .0870971     .102445
     _bocc03 |   .0984099   .0052458    18.76   0.000     .0881282    .1086916
     _bocc05 |  -.0807048   .0035332   -22.84   0.000    -.0876298   -.0737798
     _bocc06 |  -.3146617   .0136764   -23.01   0.000     -.341467   -.2878565
     _bocc07 |   .0346552    .010213     3.39   0.001      .014638    .0546725
     _bocc08 |  -.1895276   .0040183   -47.17   0.000    -.1974032   -.1816519
     _bocc09 |    -.17278   .0144202   -11.98   0.000    -.2010431   -.1445169
     _bocc10 |  -.0441272   .0063602    -6.94   0.000     -.056593   -.0316614
     _bocc11 |  -.2134722   .0052142   -40.94   0.000    -.2236918   -.2032525
     _bocc12 |  -.1103448   .0101238   -10.90   0.000    -.1301872   -.0905025
     _bocc13 |  -.1764151   .0069187   -25.50   0.000    -.1899755   -.1628548
     _mocc01 |   .2332174   .0034861    66.90   0.000     .2263849      .24005
     _mocc02 |   .0955331   .0034605    27.61   0.000     .0887507    .1023156
     _mocc03 |  -.1444082   .0039991   -36.11   0.000    -.1522463     -.13657
     _mocc05 |  -.0243027   .0032348    -7.51   0.000    -.0306427   -.0179627
     _mocc06 |  -.1184764   .0161239    -7.35   0.000    -.1500788    -.086874
     _mocc07 |   .0798993   .0138416     5.77   0.000     .0527703    .1070284
     _mocc08 |   .1275982    .012203    10.46   0.000     .1036807    .1515157
     _mocc09 |  -.1480388   .0047397   -31.23   0.000    -.1573285   -.1387492
     _mocc10 |  -.1290046   .0062821   -20.54   0.000    -.1413173    -.116692
      year99 |   .0156905   .0026793     5.86   0.000     .0104391     .020942
     year100 |   .0240099   .0026851     8.94   0.000     .0187471    .0292727
     year101 |   .0414383   .0026602    15.58   0.000     .0362244    .0466521
     year102 |    .056439   .0026147    21.59   0.000     .0513143    .0615637
     year103 |   .0235792   .0054189     4.35   0.000     .0129584    .0342001
     year104 |   .0291961   .0054274     5.38   0.000     .0185586    .0398336
     year105 |    .021193   .0054281     3.90   0.000     .0105541    .0318318
     year106 |   .0177949   .0054312     3.28   0.001     .0071499    .0284398
     year107 |   .0186265   .0054256     3.43   0.001     .0079926    .0292604
     year108 |   .0153948   .0054318     2.83   0.005     .0047487    .0260409
       _cons |   2.310421   .0055135   419.05   0.000     2.299615    2.321228
------------------------------------------------------------------------------

. 
. predict temp
(option xb assumed; fitted values)

. 
. replace olshat = temp if female
(672098 real changes made)

. 
. drop temp

. 
. /* heckman two step with proxy in exclusions */
. 
. heckman lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp ex
> psq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2 size3 size4 size5 size
> 6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-
> _mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if femal
> e, select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba 
> sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian other for_nonctz for_ctz 
> pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt pac _b
> i01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mo
> cc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    672099
(regression model with sample selection)        Censored obs       =    217108
                                                Uncensored obs     =    454991

                                                Wald chi2(94)      = 397402.42
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
     ed_elem |  -.1730174   .0045547   -37.99   0.000    -.1819444   -.1640904
       sch_9 |  -.1660991   .0060561   -27.43   0.000    -.1779688   -.1542294
      sch_10 |  -.1491365   .0051632   -28.88   0.000    -.1592562   -.1390167
      sch_11 |  -.1194664   .0045204   -26.43   0.000    -.1283262   -.1106066
      sch_12 |  -.0720727   .0064251   -11.22   0.000    -.0846658   -.0594797
    sch_some |   .0883408      .0017    51.97   0.000     .0850089    .0916727
    ed_assoc |   .1679658    .002074    80.99   0.000     .1639009    .1720308
      sch_ba |   .3261946    .001847   176.60   0.000     .3225744    .3298147
      sch_ma |   .4858537   .0025348   191.67   0.000     .4808856    .4908218
     sch_pro |   .7533379   .0053824   139.96   0.000     .7427887    .7638871
     sch_phd |    .712931   .0058322   122.24   0.000     .7015001     .724362
         exp |   .0470338   .0008641    54.43   0.000     .0453403    .0487273
       expsq |  -.0022493   .0000765   -29.41   0.000    -.0023992   -.0020994
      expcub |   .0000503   2.55e-06    19.71   0.000     .0000453    .0000553
     expquar |  -4.30e-07   2.83e-08   -15.20   0.000    -4.85e-07   -3.74e-07
        _msp |   .0279026   .0016234    17.19   0.000     .0247208    .0310843
       _mnsp |  -.0031078   .0019232    -1.62   0.106    -.0068773    .0006617
       black |  -.0767785   .0021293   -36.06   0.000    -.0809519   -.0726051
       asian |  -.0074961   .0035343    -2.12   0.034    -.0144231    -.000569
       other |  -.0371459   .0040778    -9.11   0.000    -.0451383   -.0291536
    hispanic |  -.0981508   .0023268   -42.18   0.000    -.1027114   -.0935903
  for_nonctz |  -.1646739    .002937   -56.07   0.000    -.1704302   -.1589175
     for_ctz |  -.0541561   .0030756   -17.61   0.000    -.0601841    -.048128
       size2 |   .0633002   .0023475    26.96   0.000     .0586991    .0679012
       size3 |     .09503   .0022461    42.31   0.000     .0906277    .0994323
       size4 |   .1267177   .0021023    60.28   0.000     .1225973    .1308381
       size5 |   .1614877   .0018312    88.19   0.000     .1578987    .1650768
       size6 |   .2634131   .0022281   118.22   0.000     .2590461    .2677802
       size7 |   .2667495   .0020892   127.68   0.000     .2626546    .2708443
          ma |  -.0261237   .0026782    -9.75   0.000     -.031373   -.0208744
         enc |  -.0620788   .0024482   -25.36   0.000    -.0668772   -.0572803
         wnc |  -.1030693    .002517   -40.95   0.000    -.1080025   -.0981361
          sa |  -.0648862   .0023502   -27.61   0.000    -.0694926   -.0602798
         esc |  -.1171404   .0032048   -36.55   0.000    -.1234217    -.110859
         wsc |  -.1469279   .0027656   -53.13   0.000    -.1523484   -.1415073
          mt |  -.0620683   .0025852   -24.01   0.000    -.0671352   -.0570015
         pac |   .0169494    .002525     6.71   0.000     .0120006    .0218983
  pub_fedall |   .0968875   .0038616    25.09   0.000     .0893189    .1044561
   pub_state |  -.1574463    .003174   -49.60   0.000    -.1636672   -.1512253
   pub_local |  -.1900911   .0029097   -65.33   0.000     -.195794   -.1843882
      member |   .1126488   .0019189    58.71   0.000     .1088879    .1164098
       _bi01 |  -.2346123    .012699   -18.47   0.000    -.2595018   -.2097228
       _bi02 |   .1480138   .0197638     7.49   0.000     .1092775    .1867501
       _bi03 |  -.0358986   .0084499    -4.25   0.000    -.0524601   -.0193371
       _bi05 |   .0346875   .0048777     7.11   0.000     .0251275    .0442475
       _bi06 |  -.0656792   .0056565   -11.61   0.000    -.0767658   -.0545927
       _bi07 |  -.2631112   .0036148   -72.79   0.000    -.2701961   -.2560262
       _bi08 |   -.022181   .0037509    -5.91   0.000    -.0295327   -.0148293
       _bi09 |  -.0872159   .0045047   -19.36   0.000     -.096045   -.0783869
       _bi10 |  -.1818887   .0055888   -32.55   0.000    -.1928426   -.1709349
       _bi11 |  -.1862281   .0085212   -21.85   0.000    -.2029293   -.1695268
       _bi12 |  -.1253589    .003001   -41.77   0.000    -.1312407    -.119477
       _mi01 |  -.2235504   .0157494   -14.19   0.000    -.2544187   -.1926822
       _mi02 |   .1611093   .0172111     9.36   0.000     .1273761    .1948424
       _mi03 |  -.0542884    .007336    -7.40   0.000    -.0686666   -.0399102
       _mi05 |  -.2003828   .0034855   -57.49   0.000    -.2072142   -.1935514
       _mi06 |  -.0074001   .0059956    -1.23   0.217    -.0191513     .004351
       _mi07 |   .0064363    .005487     1.17   0.241     -.004318    .0171907
       _mi08 |  -.0329536   .0035358    -9.32   0.000    -.0398836   -.0260236
       _mi09 |  -.0532501   .0035326   -15.07   0.000    -.0601739   -.0463263
       _mi10 |   -.141264   .0029769   -47.45   0.000    -.1470987   -.1354293
       _mi11 |  -.2631579   .0042312   -62.19   0.000    -.2714509    -.254865
       _mi12 |  -.2115862   .0048814   -43.35   0.000    -.2211535   -.2020188
     _bocc01 |   .1478953   .0037478    39.46   0.000     .1405496    .1552409
     _bocc02 |   .0931302   .0039672    23.48   0.000     .0853546    .1009058
     _bocc03 |   .0970659   .0053151    18.26   0.000     .0866486    .1074833
     _bocc05 |   -.079999   .0035789   -22.35   0.000    -.0870135   -.0729844
     _bocc06 |   -.286124   .0138455   -20.67   0.000    -.3132607   -.2589872
     _bocc07 |   .0371855   .0103414     3.60   0.000     .0169167    .0574543
     _bocc08 |  -.1889461   .0040697   -46.43   0.000    -.1969226   -.1809696
     _bocc09 |  -.1723386   .0146227   -11.79   0.000    -.2009985   -.1436787
     _bocc10 |  -.0478502   .0064474    -7.42   0.000    -.0604868   -.0352136
     _bocc11 |  -.2205803   .0052928   -41.68   0.000     -.230954   -.2102066
     _bocc12 |  -.1109195   .0102537   -10.82   0.000    -.1310163   -.0908227
     _bocc13 |  -.1818995    .007018   -25.92   0.000    -.1956545   -.1681445
     _mocc01 |   .2244649   .0035468    63.29   0.000     .2175133    .2314166
     _mocc02 |   .0909969   .0035075    25.94   0.000     .0841224    .0978715
     _mocc03 |  -.1428805    .004047   -35.31   0.000    -.1508124   -.1349486
     _mocc05 |  -.0282436   .0032776    -8.62   0.000    -.0346676   -.0218196
     _mocc06 |  -.1289413   .0163468    -7.89   0.000    -.1609804   -.0969022
     _mocc07 |   .0801035   .0140088     5.72   0.000     .0526468    .1075602
     _mocc08 |   .1248517    .012352    10.11   0.000     .1006423    .1490612
     _mocc09 |  -.1564867   .0048117   -32.52   0.000    -.1659175    -.147056
     _mocc10 |  -.1339436   .0063632   -21.05   0.000    -.1464153   -.1214719
      year99 |   .0216145   .0027277     7.92   0.000     .0162684    .0269606
     year100 |   .0331829   .0027478    12.08   0.000     .0277974    .0385684
     year101 |   .0528619   .0027365    19.32   0.000     .0474984    .0582253
     year102 |   .0674264   .0026883    25.08   0.000     .0621575    .0726953
     year103 |   .0399247   .0055288     7.22   0.000     .0290885    .0507608
     year104 |   .0453127   .0055362     8.18   0.000     .0344619    .0561635
     year105 |   .0364017   .0055327     6.58   0.000     .0255578    .0472456
     year106 |   .0325557   .0055339     5.88   0.000     .0217095    .0434019
     year107 |   .0336633   .0055294     6.09   0.000     .0228259    .0445007
     year108 |   .0302628   .0055349     5.47   0.000     .0194147    .0411109
       _cons |    2.35479   .0058749   400.82   0.000     2.343275    2.366304
-------------+----------------------------------------------------------------
select       |
         feb |   .1189001     .00602    19.75   0.000     .1071012     .130699
       march |   .1336172   .0060546    22.07   0.000     .1217504    .1454839
 nspouseprox |  -.6708435   .0045782  -146.53   0.000    -.6798165   -.6618704
  spouseprox |  -.2244854   .0044991   -49.90   0.000    -.2333035   -.2156674
     ed_elem |   .1609247   .0130444    12.34   0.000     .1353582    .1864912
       sch_9 |   .1327435   .0177298     7.49   0.000     .0979937    .1674932
      sch_10 |   .0748217   .0146523     5.11   0.000     .0461038    .1035397
      sch_11 |   .0771932   .0129553     5.96   0.000     .0518013    .1025851
      sch_12 |   .0047954   .0176509     0.27   0.786    -.0297997    .0393905
    sch_some |   .0357892   .0048035     7.45   0.000     .0263744    .0452039
    ed_assoc |   .0427834   .0059114     7.24   0.000     .0311972    .0543696
      sch_ba |   .0468553   .0052199     8.98   0.000     .0366244    .0570861
      sch_ma |   .1147747   .0073482    15.62   0.000     .1003726    .1291769
     sch_pro |   .0375075   .0154821     2.42   0.015     .0071632    .0678518
     sch_phd |   .1191857   .0174652     6.82   0.000     .0849544    .1534169
         exp |  -.0285807   .0025342   -11.28   0.000    -.0335476   -.0236138
       expsq |   .0007604   .0002209     3.44   0.001     .0003275    .0011933
      expcub |  -6.36e-06   7.28e-06    -0.87   0.383    -.0000206    7.91e-06
     expquar |  -5.41e-08   7.99e-08    -0.68   0.498    -2.11e-07    1.03e-07
        _msp |  -.0220233   .0051815    -4.25   0.000    -.0321789   -.0118677
       _mnsp |   .0539672   .0054759     9.86   0.000     .0432346    .0646999
    hispanic |   .0309705   .0067083     4.62   0.000     .0178225    .0441186
       black |  -.2575059   .0053671   -47.98   0.000    -.2680253   -.2469865
       asian |  -.1735403   .0094342   -18.39   0.000     -.192031   -.1550496
       other |  -.0189047   .0120325    -1.57   0.116    -.0424879    .0046785
  for_nonctz |   .0894271   .0082342    10.86   0.000     .0732884    .1055659
     for_ctz |    .006266   .0083055     0.75   0.451    -.0100125    .0225446
  pub_fedall |  -.0884738   .0109146    -8.11   0.000    -.1098659   -.0670816
   pub_state |  -.0273522   .0092917    -2.94   0.003    -.0455636   -.0091408
   pub_local |   .0064007   .0084827     0.75   0.451     -.010225    .0230264
      member |   .0992939   .0055341    17.94   0.000     .0884473    .1101405
       size2 |   .0256579   .0071527     3.59   0.000     .0116388     .039677
       size3 |  -.0534684   .0065899    -8.11   0.000    -.0663843   -.0405525
       size4 |  -.0799129   .0061012   -13.10   0.000    -.0918711   -.0679547
       size5 |  -.0775769   .0053327   -14.55   0.000    -.0880288   -.0671249
       size6 |  -.1267726   .0063104   -20.09   0.000    -.1391407   -.1144045
       size7 |   -.199247   .0057209   -34.83   0.000    -.2104598   -.1880343
          ma |  -.1121932   .0073028   -15.36   0.000    -.1265065   -.0978799
         enc |  -.0111171   .0068953    -1.61   0.107    -.0246315    .0023974
         wnc |   .2165148   .0073739    29.36   0.000     .2020622    .2309674
          sa |  -.0197123   .0065703    -3.00   0.003    -.0325898   -.0068348
         esc |   -.034713   .0090266    -3.85   0.000    -.0524047   -.0170213
         wsc |   .1012216   .0079522    12.73   0.000     .0856357    .1168076
          mt |   .2552924   .0075871    33.65   0.000     .2404219    .2701628
         pac |   .1052543   .0071975    14.62   0.000     .0911475    .1193611
       _bi01 |  -.0042336   .0388197    -0.11   0.913    -.0803188    .0718517
       _bi02 |  -.0962975   .0600952    -1.60   0.109    -.2140818    .0214869
       _bi03 |  -.0795426   .0245725    -3.24   0.001    -.1277038   -.0313814
       _bi05 |  -.0638105   .0140978    -4.53   0.000    -.0914417   -.0361792
       _bi06 |   .0367077   .0169134     2.17   0.030     .0035581    .0698574
       _bi07 |  -.0180981   .0105778    -1.71   0.087    -.0388302     .002634
       _bi08 |   -.074791   .0108317    -6.90   0.000    -.0960208   -.0535611
       _bi09 |   .0118387   .0132638     0.89   0.372     -.014158    .0378353
       _bi10 |  -.0443256   .0162786    -2.72   0.006    -.0762311     -.01242
       _bi11 |  -.0719956   .0245324    -2.93   0.003    -.1200783   -.0239129
       _bi12 |  -.0408004   .0087736    -4.65   0.000    -.0579963   -.0236046
       _mi01 |  -.0923725   .0456665    -2.02   0.043    -.1818772   -.0028679
       _mi02 |   .0074248   .0527196     0.14   0.888    -.0959037    .1107534
       _mi03 |  -.0703588   .0207317    -3.39   0.001    -.1109921   -.0297255
       _mi05 |   .0053826   .0099873     0.54   0.590    -.0141922    .0249573
       _mi06 |  -.0620222   .0167728    -3.70   0.000    -.0948963   -.0291481
       _mi07 |  -.0376065   .0156501    -2.40   0.016    -.0682801   -.0069329
       _mi08 |  -.0925975   .0100055    -9.25   0.000    -.1122079    -.072987
       _mi09 |    -.02548   .0101332    -2.51   0.012    -.0453407   -.0056193
       _mi10 |   -.041017   .0085651    -4.79   0.000    -.0578042   -.0242297
       _mi11 |  -.0267083   .0119218    -2.24   0.025    -.0500746   -.0033419
       _mi12 |  -.1838403   .0131608   -13.97   0.000    -.2096351   -.1580455
     _bocc01 |   .0781951   .0109261     7.16   0.000     .0567803    .0996099
     _bocc02 |   .0287117   .0115741     2.48   0.013     .0060268    .0513966
     _bocc03 |   .0206297   .0155177     1.33   0.184    -.0097846    .0510439
     _bocc05 |  -.0159782   .0103365    -1.55   0.122    -.0362374     .004281
     _bocc06 |  -.4021201   .0341603   -11.77   0.000    -.4690731   -.3351672
     _bocc07 |  -.0434073   .0293738    -1.48   0.139    -.1009789    .0141643
     _bocc08 |  -.0003313   .0117048    -0.03   0.977    -.0232723    .0226096
     _bocc09 |   .0380959    .044553     0.86   0.393    -.0492265    .1254183
     _bocc10 |   .0758583   .0190841     3.97   0.000     .0384541    .1132624
     _bocc11 |   .1475936   .0157576     9.37   0.000     .1167092     .178478
     _bocc12 |   .0100825   .0295233     0.34   0.733    -.0477821     .067947
     _bocc13 |   .1235591   .0212048     5.83   0.000     .0819984    .1651197
     _mocc01 |   .1324631   .0099004    13.38   0.000     .1130586    .1518676
     _mocc02 |   .0652674   .0097927     6.66   0.000      .046074    .0844607
     _mocc03 |  -.0166856   .0111485    -1.50   0.134    -.0385362     .005165
     _mocc05 |   .0563869   .0090907     6.20   0.000     .0385695    .0742042
     _mocc06 |   .1996558   .0487425     4.10   0.000     .1041222    .2951894
     _mocc07 |   .0082772   .0390297     0.21   0.832    -.0682196     .084774
     _mocc08 |   .0527571   .0345148     1.53   0.126    -.0148906    .1204047
     _mocc09 |   .1557666   .0136682    11.40   0.000     .1289774    .1825558
     _mocc10 |   .0915827   .0179684     5.10   0.000     .0563653    .1268002
      year99 |  -.1055107   .0082789   -12.74   0.000    -.1217372   -.0892843
     year100 |  -.1684877    .008195   -20.56   0.000    -.1845495   -.1524258
     year101 |  -.2043223   .0080651   -25.33   0.000    -.2201296   -.1885151
     year102 |  -.2071566   .0079567   -26.04   0.000    -.2227516   -.1915617
     year103 |  -.2908475   .0158037   -18.40   0.000    -.3218222   -.2598729
     year104 |  -.2916366   .0158369   -18.41   0.000    -.3226764   -.2605968
     year105 |  -.2720049   .0158508   -17.16   0.000    -.3030719   -.2409378
     year106 |  -.2646092   .0158651   -16.68   0.000    -.2957042   -.2335141
     year107 |  -.2544839   .0158488   -16.06   0.000    -.2855469   -.2234208
     year108 |  -.2473449   .0158621   -15.59   0.000    -.2784342   -.2162557
       _cons |    1.14041   .0167589    68.05   0.000     1.107563    1.173256
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.1142736   .0046714   -24.46   0.000    -.1234294   -.1051179
-------------+----------------------------------------------------------------
         rho |   -0.29694
       sigma |  .38483662
      lambda | -.11427365   .0046714
------------------------------------------------------------------------------

. 
. /* heckman two step with proxy in main equation */
. 
. heckman lrwage2 nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma
>  sch_pro sch_phd exp expsq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2
>  size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_
> bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 
> year99-year108 if female, select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sc
> h_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian ot
> her for_nonctz for_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc w
> nc sa esc wsc mt pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _moc
> c01-_mocc03 _mocc05-_mocc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    672099
(regression model with sample selection)        Censored obs       =    217108
                                                Uncensored obs     =    454991

                                                Wald chi2(96)      = 407947.98
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
 nspouseprox |  -.0371165   .0072089    -5.15   0.000    -.0512456   -.0229874
  spouseprox |   .0099563   .0026221     3.80   0.000     .0048171    .0150955
     ed_elem |  -.1655979   .0047542   -34.83   0.000    -.1749159   -.1562799
       sch_9 |  -.1600921   .0061049   -26.22   0.000    -.1720574   -.1481269
      sch_10 |  -.1458185   .0051492   -28.32   0.000    -.1559108   -.1357261
      sch_11 |  -.1161192   .0045251   -25.66   0.000    -.1249883   -.1072501
      sch_12 |  -.0717338   .0063516   -11.29   0.000    -.0841828   -.0592848
    sch_some |   .0897448   .0017138    52.37   0.000     .0863859    .0931038
    ed_assoc |   .1694287   .0020878    81.15   0.000     .1653366    .1735207
      sch_ba |   .3273162   .0018736   174.70   0.000      .323644    .3309884
      sch_ma |   .4892771   .0027081   180.67   0.000     .4839693    .4945849
     sch_pro |   .7533965   .0053267   141.44   0.000     .7429563    .7638367
     sch_phd |   .7158394   .0058577   122.20   0.000     .7043584    .7273203
         exp |   .0453172   .0009026    50.21   0.000     .0435482    .0470862
       expsq |  -.0021724   .0000761   -28.53   0.000    -.0023216   -.0020232
      expcub |   .0000486   2.52e-06    19.28   0.000     .0000437    .0000536
     expquar |  -4.19e-07   2.79e-08   -15.00   0.000    -4.74e-07   -3.64e-07
        _msp |   .0175553   .0017686     9.93   0.000     .0140889    .0210217
       _mnsp |  -.0020787     .00195    -1.07   0.286    -.0059007    .0017434
       black |  -.0880603   .0033502   -26.29   0.000    -.0946265   -.0814941
       asian |  -.0148847   .0038721    -3.84   0.000    -.0224738   -.0072955
       other |  -.0376635   .0040282    -9.35   0.000    -.0455585   -.0297684
    hispanic |  -.0964986   .0023176   -41.64   0.000    -.1010411   -.0919562
  for_nonctz |    -.16111   .0030201   -53.35   0.000    -.1670292   -.1551908
     for_ctz |  -.0542034   .0030416   -17.82   0.000    -.0601647    -.048242
       size2 |   .0638212   .0023264    27.43   0.000     .0592614    .0683809
       size3 |   .0927126   .0022654    40.93   0.000     .0882725    .0971528
       size4 |   .1233403   .0021914    56.28   0.000     .1190452    .1276354
       size5 |   .1581047   .0019304    81.90   0.000     .1543212    .1618882
       size6 |   .2579396   .0024893   103.62   0.000     .2530607    .2628185
       size7 |   .2582611   .0027927    92.48   0.000     .2527875    .2637348
          ma |  -.0309173   .0028816   -10.73   0.000    -.0365652   -.0252694
         enc |  -.0625569   .0024216   -25.83   0.000    -.0673032   -.0578107
         wnc |  -.0951752   .0031151   -30.55   0.000    -.1012807   -.0890697
          sa |  -.0658465   .0023319   -28.24   0.000     -.070417    -.061276
         esc |  -.1184487   .0031817   -37.23   0.000    -.1246847   -.1122127
         wsc |  -.1429839   .0028856   -49.55   0.000    -.1486395   -.1373282
          mt |  -.0528088   .0033875   -15.59   0.000    -.0594482   -.0461694
         pac |    .021259   .0026865     7.91   0.000     .0159935    .0265245
  pub_fedall |   .0935103   .0039089    23.92   0.000     .0858489    .1011716
   pub_state |    -.15817   .0031459   -50.28   0.000    -.1643358   -.1520041
   pub_local |  -.1893133   .0028735   -65.88   0.000    -.1949453   -.1836813
      member |   .1166227    .002101    55.51   0.000     .1125048    .1207406
       _bi01 |  -.2338215   .0125271   -18.67   0.000    -.2583741   -.2092688
       _bi02 |   .1448225   .0195172     7.42   0.000     .1065694    .1830755
       _bi03 |  -.0387099   .0083786    -4.62   0.000    -.0551317    -.022288
       _bi05 |   .0321885   .0048534     6.63   0.000      .022676     .041701
       _bi06 |  -.0642151     .00559   -11.49   0.000    -.0751714   -.0532588
       _bi07 |  -.2635613   .0035727   -73.77   0.000    -.2705636   -.2565589
       _bi08 |  -.0249701   .0037699    -6.62   0.000    -.0323591   -.0175812
       _bi09 |   -.086501   .0044479   -19.45   0.000    -.0952188   -.0777832
       _bi10 |  -.1834093   .0055329   -33.15   0.000    -.1942536   -.1725649
       _bi11 |  -.1887255   .0084374   -22.37   0.000    -.2052624   -.1721886
       _bi12 |  -.1266583   .0029866   -42.41   0.000    -.1325119   -.1208046
       _mi01 |  -.2269337   .0155769   -14.57   0.000    -.2574638   -.1964036
       _mi02 |   .1619563    .016977     9.54   0.000     .1286819    .1952306
       _mi03 |  -.0564977   .0072782    -7.76   0.000    -.0707627   -.0422327
       _mi05 |   -.199857    .003443   -58.05   0.000    -.2066052   -.1931087
       _mi06 |  -.0098795   .0059543    -1.66   0.097    -.0215498    .0017907
       _mi07 |   .0047211   .0054309     0.87   0.385    -.0059232    .0153654
       _mi08 |  -.0367396   .0036067   -10.19   0.000    -.0438085   -.0296707
       _mi09 |   -.054206    .003498   -15.50   0.000    -.0610619     -.04735
       _mi10 |  -.1427102   .0029661   -48.11   0.000    -.1485236   -.1368967
       _mi11 |  -.2639542   .0041869   -63.04   0.000    -.2721604   -.2557479
       _mi12 |   -.219322   .0051721   -42.41   0.000    -.2294591    -.209185
     _bocc01 |   .1507709   .0037647    40.05   0.000     .1433923    .1581495
     _bocc02 |   .0940568   .0039231    23.98   0.000     .0863677     .101746
     _bocc03 |   .0977667   .0052502    18.62   0.000     .0874766    .1080568
     _bocc05 |  -.0804923   .0035377   -22.75   0.000    -.0874262   -.0735585
     _bocc06 |  -.3034488   .0143687   -21.12   0.000     -.331611   -.2752866
     _bocc07 |   .0349953   .0102243     3.42   0.001     .0149561    .0550344
     _bocc08 |  -.1888059   .0040193   -46.97   0.000    -.1966836   -.1809282
     _bocc09 |   -.170494   .0144287   -11.82   0.000    -.1987737   -.1422144
     _bocc10 |  -.0448365   .0063996    -7.01   0.000    -.0573795   -.0322935
     _bocc11 |  -.2144781   .0053899   -39.79   0.000    -.2250422   -.2039141
     _bocc12 |  -.1099006   .0101268   -10.85   0.000    -.1297489   -.0900524
     _bocc13 |  -.1768685   .0070086   -25.24   0.000    -.1906052   -.1631319
     _mocc01 |   .2297894   .0037245    61.70   0.000     .2224896    .2370893
     _mocc02 |   .0936746   .0035219    26.60   0.000     .0867719    .1005773
     _mocc03 |  -.1434685   .0040041   -35.83   0.000    -.1513165   -.1356205
     _mocc05 |  -.0257078   .0032843    -7.83   0.000    -.0321449   -.0192707
     _mocc06 |  -.1202927   .0162406    -7.41   0.000    -.1521237   -.0884618
     _mocc07 |   .0802412   .0138443     5.80   0.000     .0531069    .1073755
     _mocc08 |   .1271437   .0122159    10.41   0.000      .103201    .1510863
     _mocc09 |  -.1499669   .0049775   -30.13   0.000    -.1597227   -.1402111
     _mocc10 |  -.1297223   .0063492   -20.43   0.000    -.1421665    -.117278
      year99 |   .0175054   .0028379     6.17   0.000     .0119432    .0230676
     year100 |   .0267882   .0030836     8.69   0.000     .0207445    .0328319
     year101 |   .0448106   .0032512    13.78   0.000     .0384383    .0511828
     year102 |   .0594099   .0032186    18.46   0.000     .0531015    .0657184
     year103 |   .0283996   .0060639     4.68   0.000     .0165146    .0402847
     year104 |   .0337671   .0060733     5.56   0.000     .0218637    .0456706
     year105 |   .0254312   .0059922     4.24   0.000     .0136867    .0371757
     year106 |   .0219312   .0059635     3.68   0.000      .010243    .0336193
     year107 |   .0234083   .0059223     3.95   0.000     .0118009    .0350158
     year108 |   .0204302   .0058994     3.46   0.001     .0088676    .0319927
       _cons |   2.344632    .006684   350.78   0.000     2.331531    2.357732
-------------+----------------------------------------------------------------
select       |
         feb |   .1189001     .00602    19.75   0.000     .1071012     .130699
       march |   .1336172   .0060546    22.07   0.000     .1217504    .1454839
 nspouseprox |  -.6708435   .0045782  -146.53   0.000    -.6798165   -.6618704
  spouseprox |  -.2244854   .0044991   -49.90   0.000    -.2333035   -.2156674
     ed_elem |   .1609247   .0130444    12.34   0.000     .1353582    .1864912
       sch_9 |   .1327435   .0177298     7.49   0.000     .0979937    .1674932
      sch_10 |   .0748217   .0146523     5.11   0.000     .0461038    .1035397
      sch_11 |   .0771932   .0129553     5.96   0.000     .0518013    .1025851
      sch_12 |   .0047954   .0176509     0.27   0.786    -.0297997    .0393905
    sch_some |   .0357892   .0048035     7.45   0.000     .0263744    .0452039
    ed_assoc |   .0427834   .0059114     7.24   0.000     .0311972    .0543696
      sch_ba |   .0468553   .0052199     8.98   0.000     .0366244    .0570861
      sch_ma |   .1147747   .0073482    15.62   0.000     .1003726    .1291769
     sch_pro |   .0375075   .0154821     2.42   0.015     .0071632    .0678518
     sch_phd |   .1191857   .0174652     6.82   0.000     .0849544    .1534169
         exp |  -.0285807   .0025342   -11.28   0.000    -.0335476   -.0236138
       expsq |   .0007604   .0002209     3.44   0.001     .0003275    .0011933
      expcub |  -6.36e-06   7.28e-06    -0.87   0.383    -.0000206    7.91e-06
     expquar |  -5.41e-08   7.99e-08    -0.68   0.498    -2.11e-07    1.03e-07
        _msp |  -.0220233   .0051815    -4.25   0.000    -.0321789   -.0118677
       _mnsp |   .0539672   .0054759     9.86   0.000     .0432346    .0646999
    hispanic |   .0309705   .0067083     4.62   0.000     .0178225    .0441186
       black |  -.2575059   .0053671   -47.98   0.000    -.2680253   -.2469865
       asian |  -.1735403   .0094342   -18.39   0.000     -.192031   -.1550496
       other |  -.0189047   .0120325    -1.57   0.116    -.0424879    .0046785
  for_nonctz |   .0894271   .0082342    10.86   0.000     .0732884    .1055659
     for_ctz |    .006266   .0083055     0.75   0.451    -.0100125    .0225446
  pub_fedall |  -.0884738   .0109146    -8.11   0.000    -.1098659   -.0670816
   pub_state |  -.0273522   .0092917    -2.94   0.003    -.0455636   -.0091408
   pub_local |   .0064007   .0084827     0.75   0.451     -.010225    .0230264
      member |   .0992939   .0055341    17.94   0.000     .0884473    .1101405
       size2 |   .0256579   .0071527     3.59   0.000     .0116388     .039677
       size3 |  -.0534684   .0065899    -8.11   0.000    -.0663843   -.0405525
       size4 |  -.0799129   .0061012   -13.10   0.000    -.0918711   -.0679547
       size5 |  -.0775769   .0053327   -14.55   0.000    -.0880288   -.0671249
       size6 |  -.1267726   .0063104   -20.09   0.000    -.1391407   -.1144045
       size7 |   -.199247   .0057209   -34.83   0.000    -.2104598   -.1880343
          ma |  -.1121932   .0073028   -15.36   0.000    -.1265065   -.0978799
         enc |  -.0111171   .0068953    -1.61   0.107    -.0246315    .0023974
         wnc |   .2165148   .0073739    29.36   0.000     .2020622    .2309674
          sa |  -.0197123   .0065703    -3.00   0.003    -.0325898   -.0068348
         esc |   -.034713   .0090266    -3.85   0.000    -.0524047   -.0170213
         wsc |   .1012216   .0079522    12.73   0.000     .0856357    .1168076
          mt |   .2552924   .0075871    33.65   0.000     .2404219    .2701628
         pac |   .1052543   .0071975    14.62   0.000     .0911475    .1193611
       _bi01 |  -.0042336   .0388197    -0.11   0.913    -.0803188    .0718517
       _bi02 |  -.0962975   .0600952    -1.60   0.109    -.2140818    .0214869
       _bi03 |  -.0795426   .0245725    -3.24   0.001    -.1277038   -.0313814
       _bi05 |  -.0638105   .0140978    -4.53   0.000    -.0914417   -.0361792
       _bi06 |   .0367077   .0169134     2.17   0.030     .0035581    .0698574
       _bi07 |  -.0180981   .0105778    -1.71   0.087    -.0388302     .002634
       _bi08 |   -.074791   .0108317    -6.90   0.000    -.0960208   -.0535611
       _bi09 |   .0118387   .0132638     0.89   0.372     -.014158    .0378353
       _bi10 |  -.0443256   .0162786    -2.72   0.006    -.0762311     -.01242
       _bi11 |  -.0719956   .0245324    -2.93   0.003    -.1200783   -.0239129
       _bi12 |  -.0408004   .0087736    -4.65   0.000    -.0579963   -.0236046
       _mi01 |  -.0923725   .0456665    -2.02   0.043    -.1818772   -.0028679
       _mi02 |   .0074248   .0527196     0.14   0.888    -.0959037    .1107534
       _mi03 |  -.0703588   .0207317    -3.39   0.001    -.1109921   -.0297255
       _mi05 |   .0053826   .0099873     0.54   0.590    -.0141922    .0249573
       _mi06 |  -.0620222   .0167728    -3.70   0.000    -.0948963   -.0291481
       _mi07 |  -.0376065   .0156501    -2.40   0.016    -.0682801   -.0069329
       _mi08 |  -.0925975   .0100055    -9.25   0.000    -.1122079    -.072987
       _mi09 |    -.02548   .0101332    -2.51   0.012    -.0453407   -.0056193
       _mi10 |   -.041017   .0085651    -4.79   0.000    -.0578042   -.0242297
       _mi11 |  -.0267083   .0119218    -2.24   0.025    -.0500746   -.0033419
       _mi12 |  -.1838403   .0131608   -13.97   0.000    -.2096351   -.1580455
     _bocc01 |   .0781951   .0109261     7.16   0.000     .0567803    .0996099
     _bocc02 |   .0287117   .0115741     2.48   0.013     .0060268    .0513966
     _bocc03 |   .0206297   .0155177     1.33   0.184    -.0097846    .0510439
     _bocc05 |  -.0159782   .0103365    -1.55   0.122    -.0362374     .004281
     _bocc06 |  -.4021201   .0341603   -11.77   0.000    -.4690731   -.3351672
     _bocc07 |  -.0434073   .0293738    -1.48   0.139    -.1009789    .0141643
     _bocc08 |  -.0003313   .0117048    -0.03   0.977    -.0232723    .0226096
     _bocc09 |   .0380959    .044553     0.86   0.393    -.0492265    .1254183
     _bocc10 |   .0758583   .0190841     3.97   0.000     .0384541    .1132624
     _bocc11 |   .1475936   .0157576     9.37   0.000     .1167092     .178478
     _bocc12 |   .0100825   .0295233     0.34   0.733    -.0477821     .067947
     _bocc13 |   .1235591   .0212048     5.83   0.000     .0819984    .1651197
     _mocc01 |   .1324631   .0099004    13.38   0.000     .1130586    .1518676
     _mocc02 |   .0652674   .0097927     6.66   0.000      .046074    .0844607
     _mocc03 |  -.0166856   .0111485    -1.50   0.134    -.0385362     .005165
     _mocc05 |   .0563869   .0090907     6.20   0.000     .0385695    .0742042
     _mocc06 |   .1996558   .0487425     4.10   0.000     .1041222    .2951894
     _mocc07 |   .0082772   .0390297     0.21   0.832    -.0682196     .084774
     _mocc08 |   .0527571   .0345148     1.53   0.126    -.0148906    .1204047
     _mocc09 |   .1557666   .0136682    11.40   0.000     .1289774    .1825558
     _mocc10 |   .0915827   .0179684     5.10   0.000     .0563653    .1268002
      year99 |  -.1055107   .0082789   -12.74   0.000    -.1217372   -.0892843
     year100 |  -.1684877    .008195   -20.56   0.000    -.1845495   -.1524258
     year101 |  -.2043223   .0080651   -25.33   0.000    -.2201296   -.1885151
     year102 |  -.2071566   .0079567   -26.04   0.000    -.2227516   -.1915617
     year103 |  -.2908475   .0158037   -18.40   0.000    -.3218222   -.2598729
     year104 |  -.2916366   .0158369   -18.41   0.000    -.3226764   -.2605968
     year105 |  -.2720049   .0158508   -17.16   0.000    -.3030719   -.2409378
     year106 |  -.2646092   .0158651   -16.68   0.000    -.2957042   -.2335141
     year107 |  -.2544839   .0158488   -16.06   0.000    -.2855469   -.2234208
     year108 |  -.2473449   .0158621   -15.59   0.000    -.2784342   -.2162557
       _cons |    1.14041   .0167589    68.05   0.000     1.107563    1.173256
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.0341612   .0192366    -1.78   0.076    -.0718643    .0035419
-------------+----------------------------------------------------------------
         rho |   -0.09061
       sigma |  .37700333
      lambda | -.03416119   .0192366
------------------------------------------------------------------------------

. 
. predict temp
(option xb assumed; fitted values)

. 
. replace selecthat = temp if female
(672099 real changes made)

. 
. drop temp

. 
. /* cohead sample */ 
. 
. 
. 
. 
. /* men */
. 
. /*OLS */
. 
. reg lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq 
> expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz size2 size3 size4 size5 size6 siz
> e7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-_mi03
>  _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if !female&(r
> elhead < 4)

      Source |       SS       df       MS              Number of obs =  470354
-------------+------------------------------           F( 94,470259) = 4018.93
       Model |  66917.2632    94  711.885779           Prob > F      =  0.0000
    Residual |  83298.4868470259  .177133211           R-squared     =  0.4455
-------------+------------------------------           Adj R-squared =  0.4454
       Total |   150215.75470353  .319368113           Root MSE      =  .42087

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
     ed_elem |  -.1764105   .0040551   -43.50   0.000    -.1843582   -.1684627
       sch_9 |  -.1458078     .00548   -26.61   0.000    -.1565483   -.1350673
      sch_10 |  -.1193218   .0049304   -24.20   0.000    -.1289853   -.1096583
      sch_11 |  -.1030422   .0044455   -23.18   0.000    -.1117553   -.0943291
      sch_12 |   -.075646   .0062293   -12.14   0.000    -.0878553   -.0634367
    sch_some |    .084298   .0018915    44.57   0.000     .0805907    .0880053
    ed_assoc |   .1208511   .0023409    51.63   0.000      .116263    .1254391
      sch_ba |   .2968742   .0020627   143.92   0.000     .2928313    .3009171
      sch_ma |   .4152097    .002842   146.10   0.000     .4096394      .42078
     sch_pro |   .7366984   .0050879   144.79   0.000     .7267263    .7466705
     sch_phd |   .6443441   .0048988   131.53   0.000     .6347426    .6539456
         exp |   .0485535   .0012116    40.07   0.000     .0461789    .0509282
       expsq |  -.0018744   .0000986   -19.02   0.000    -.0020676   -.0016812
      expcub |   .0000321   3.12e-06    10.29   0.000      .000026    .0000382
     expquar |  -2.24e-07   3.34e-08    -6.70   0.000    -2.89e-07   -1.58e-07
        _msp |   .1082736   .0019059    56.81   0.000     .1045381     .112009
       _mnsp |   .0348106   .0025746    13.52   0.000     .0297644    .0398567
       black |  -.1613099   .0026684   -60.45   0.000    -.1665399   -.1560799
       asian |  -.0310106    .003896    -7.96   0.000    -.0386466   -.0233745
       other |  -.0606272   .0048084   -12.61   0.000    -.0700514   -.0512029
    hispanic |  -.1356302   .0026045   -52.07   0.000     -.140735   -.1305254
  for_nonctz |  -.1747817   .0029568   -59.11   0.000     -.180577   -.1689864
     for_ctz |  -.0746451   .0033445   -22.32   0.000    -.0812002     -.06809
       size2 |   .0647695   .0025521    25.38   0.000     .0597675    .0697715
       size3 |   .0883685   .0024262    36.42   0.000     .0836133    .0931237
       size4 |   .1194095   .0022802    52.37   0.000     .1149403    .1238786
       size5 |   .1517797   .0019797    76.67   0.000     .1478995    .1556599
       size6 |   .2504173   .0023938   104.61   0.000     .2457256     .255109
       size7 |   .2534166   .0022105   114.64   0.000     .2490841    .2577492
          ma |  -.0282655   .0029123    -9.71   0.000    -.0339735   -.0225575
         enc |   -.040808   .0026488   -15.41   0.000    -.0459995   -.0356164
         wnc |  -.0876944   .0026858   -32.65   0.000    -.0929585   -.0824304
          sa |  -.0513841   .0025894   -19.84   0.000    -.0564592    -.046309
         esc |  -.0865427   .0035352   -24.48   0.000    -.0934715   -.0796139
         wsc |  -.1077672   .0029959   -35.97   0.000    -.1136391   -.1018953
          mt |  -.0223767   .0027081    -8.26   0.000    -.0276846   -.0170689
         pac |   .0309383   .0027095    11.42   0.000     .0256277    .0362489
  pub_fedall |   .0470932   .0036383    12.94   0.000     .0399623    .0542241
   pub_state |  -.2028249   .0033861   -59.90   0.000    -.2094615   -.1961883
   pub_local |  -.1836685   .0029781   -61.67   0.000    -.1895054   -.1778316
      member |   .1652133   .0018434    89.63   0.000     .1616003    .1688262
       _bi01 |  -.2250445   .0106143   -21.20   0.000    -.2458481   -.2042408
       _bi02 |   .1632964   .0083438    19.57   0.000     .1469428      .17965
       _bi03 |   .0182036   .0037768     4.82   0.000     .0108011    .0256061
       _bi05 |    .030498   .0037715     8.09   0.000      .023106    .0378901
       _bi06 |  -.0757971   .0045639   -16.61   0.000    -.0847422   -.0668521
       _bi07 |  -.2355565   .0036759   -64.08   0.000    -.2427611   -.2283519
       _bi08 |   .0364951   .0047612     7.67   0.000     .0271632    .0458269
       _bi09 |  -.0734273   .0040135   -18.30   0.000    -.0812936    -.065561
       _bi10 |  -.2332949   .0080251   -29.07   0.000    -.2490238   -.2175659
       _bi11 |  -.1724712   .0090397   -19.08   0.000    -.1901888   -.1547537
       _bi12 |   -.152925   .0037283   -41.02   0.000    -.1602324   -.1456176
       _mi01 |  -.3283813   .0111744   -29.39   0.000    -.3502828   -.3064797
       _mi02 |    .206347   .0073873    27.93   0.000     .1918682    .2208258
       _mi03 |  -.0296089   .0041001    -7.22   0.000    -.0376449   -.0215729
       _mi05 |  -.1615136   .0032225   -50.12   0.000    -.1678296   -.1551976
       _mi06 |   .0315916   .0040208     7.86   0.000      .023711    .0394722
       _mi07 |  -.0010499   .0052798    -0.20   0.842    -.0113982    .0092984
       _mi08 |   .0268949    .004094     6.57   0.000     .0188708     .034919
       _mi09 |  -.0139703   .0033828    -4.13   0.000    -.0206004   -.0073401
       _mi10 |  -.1946075   .0040839   -47.65   0.000    -.2026118   -.1866031
       _mi11 |   -.320236   .0046922   -68.25   0.000    -.3294325   -.3110395
       _mi12 |  -.2977577   .0048851   -60.95   0.000    -.3073323    -.288183
     _bocc01 |   .1188028   .0040834    29.09   0.000     .1107995    .1268061
     _bocc02 |   .0392959   .0044319     8.87   0.000     .0306096    .0479822
     _bocc03 |   .0303727   .0061326     4.95   0.000     .0183529    .0423925
     _bocc05 |  -.2164663   .0052275   -41.41   0.000    -.2267121   -.2062205
     _bocc06 |  -.2848261   .0748903    -3.80   0.000    -.4316087   -.1380435
     _bocc07 |  -.0953499   .0065684   -14.52   0.000    -.1082237    -.082476
     _bocc08 |  -.3196132   .0054439   -58.71   0.000     -.330283   -.3089433
     _bocc09 |  -.2558201   .0104192   -24.55   0.000    -.2762414   -.2353988
     _bocc10 |  -.0826729   .0041709   -19.82   0.000    -.0908478    -.074498
     _bocc11 |  -.2302559   .0051909   -44.36   0.000    -.2404298   -.2200819
     _bocc12 |   -.223051   .0049342   -45.20   0.000    -.2327219     -.21338
     _bocc13 |  -.2885782   .0056719   -50.88   0.000     -.299695   -.2774615
     _mocc01 |   .1730903   .0037745    45.86   0.000     .1656925    .1804882
     _mocc02 |   .0483737   .0039007    12.40   0.000     .0407285    .0560189
     _mocc03 |  -.1892879   .0045249   -41.83   0.000    -.1981564   -.1804193
     _mocc05 |  -.2199327   .0045599   -48.23   0.000      -.22887   -.2109953
     _mocc06 |  -.1858011   .0128624   -14.45   0.000     -.211011   -.1605913
     _mocc07 |  -.0718631   .0049897   -14.40   0.000    -.0816428   -.0620834
     _mocc08 |  -.0491682   .0043776   -11.23   0.000    -.0577481   -.0405883
     _mocc09 |  -.1806111   .0043769   -41.26   0.000    -.1891897   -.1720326
     _mocc10 |  -.2397532   .0042676   -56.18   0.000    -.2481175   -.2313889
      year99 |   .0232077    .002927     7.93   0.000     .0174709    .0289444
     year100 |   .0322773   .0029476    10.95   0.000        .0265    .0380546
     year101 |   .0462606   .0029166    15.86   0.000     .0405442     .051977
     year102 |   .0613714   .0028611    21.45   0.000     .0557638     .066979
     year103 |    .052166   .0058638     8.90   0.000     .0406731    .0636589
     year104 |   .0627841   .0058679    10.70   0.000     .0512833    .0742849
     year105 |   .0562084   .0058709     9.57   0.000     .0447017    .0677151
     year106 |   .0527577   .0058727     8.98   0.000     .0412474    .0642679
     year107 |   .0571523    .005876     9.73   0.000     .0456356     .068669
     year108 |   .0578991   .0058868     9.84   0.000     .0463611     .069437
       _cons |   2.454365   .0068842   356.52   0.000     2.440873    2.467858
------------------------------------------------------------------------------

. 
. predict olshatcohead
(option xb assumed; fitted values)

. 
. /* heckman two step with proxy in exclusions */
. 
. heckman lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp ex
> psq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2 size3 size4 size5 size
> 6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-
> _mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if !fema
> le&(relhead < 4), select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some e
> d_assoc sch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian other for_
> nonctz for_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc wnc sa es
> c wsc mt pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_moc
> c03 _mocc05-_mocc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    681555
(regression model with sample selection)        Censored obs       =    211201
                                                Uncensored obs     =    470354

                                                Wald chi2(94)      = 369731.22
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
     ed_elem |  -.1796751   .0040857   -43.98   0.000     -.187683   -.1716672
       sch_9 |  -.1502087   .0055225   -27.20   0.000    -.1610326   -.1393847
      sch_10 |  -.1231133   .0049671   -24.79   0.000    -.1328485    -.113378
      sch_11 |  -.1055114   .0044733   -23.59   0.000     -.114279   -.0967438
      sch_12 |  -.0746612   .0062587   -11.93   0.000     -.086928   -.0623943
    sch_some |   .0819149   .0019133    42.81   0.000     .0781649    .0856648
    ed_assoc |   .1185764   .0023617    50.21   0.000     .1139476    .1232052
      sch_ba |   .2946579   .0020826   141.48   0.000      .290576    .2987397
      sch_ma |    .410877   .0028837   142.48   0.000     .4052252    .4165289
     sch_pro |   .7398288   .0051193   144.52   0.000     .7297952    .7498624
     sch_phd |   .6405176   .0049363   129.76   0.000     .6308427    .6501926
         exp |   .0484552    .001218    39.78   0.000     .0460679    .0508425
       expsq |  -.0018222   .0000992   -18.37   0.000    -.0020166   -.0016278
      expcub |   .0000304   3.14e-06     9.66   0.000     .0000242    .0000365
     expquar |  -2.05e-07   3.36e-08    -6.08   0.000    -2.71e-07   -1.39e-07
        _msp |   .1094023   .0019185    57.02   0.000     .1056421    .1131625
       _mnsp |   .0320911   .0025997    12.34   0.000     .0269957    .0371865
       black |  -.1523227    .002803   -54.34   0.000    -.1578166   -.1468289
       asian |  -.0256199   .0039446    -6.49   0.000    -.0333512   -.0178887
       other |     -.0623   .0048365   -12.88   0.000    -.0717794   -.0528206
    hispanic |  -.1374716   .0026228   -52.41   0.000    -.1426123    -.132331
  for_nonctz |  -.1755368   .0029718   -59.07   0.000    -.1813613   -.1697122
     for_ctz |  -.0728966   .0033631   -21.68   0.000     -.079488   -.0663051
       size2 |   .0643934   .0025658    25.10   0.000     .0593645    .0694223
       size3 |   .0902391   .0024444    36.92   0.000      .085448    .0950301
       size4 |   .1218978    .002303    52.93   0.000     .1173839    .1264116
       size5 |   .1542421   .0020025    77.02   0.000     .1503173    .1581669
       size6 |   .2550924   .0024434   104.40   0.000     .2503034    .2598813
       size7 |   .2605863   .0023163   112.50   0.000     .2560464    .2651261
          ma |  -.0237521   .0029545    -8.04   0.000    -.0295427   -.0179614
         enc |  -.0397403    .002663   -14.92   0.000    -.0449598   -.0345208
         wnc |   -.095257   .0027873   -34.18   0.000      -.10072   -.0897941
          sa |   -.049835   .0026053   -19.13   0.000    -.0549413   -.0447286
         esc |  -.0835839   .0035619   -23.47   0.000    -.0905651   -.0766027
         wsc |  -.1112885    .003028   -36.75   0.000    -.1172232   -.1053537
          mt |  -.0314512   .0028465   -11.05   0.000    -.0370303   -.0258721
         pac |   .0263945   .0027545     9.58   0.000     .0209958    .0317933
  pub_fedall |   .0505206    .003669    13.77   0.000     .0433295    .0577116
   pub_state |    -.20306   .0034034   -59.66   0.000    -.2097306   -.1963895
   pub_local |  -.1834642   .0029929   -61.30   0.000    -.1893303   -.1775982
      member |   .1638011   .0018568    88.22   0.000     .1601618    .1674403
       _bi01 |  -.2264147   .0106714   -21.22   0.000    -.2473304   -.2054991
       _bi02 |   .1671984   .0083949    19.92   0.000     .1507447    .1836521
       _bi03 |   .0215544   .0038079     5.66   0.000      .014091    .0290178
       _bi05 |   .0334527   .0037997     8.80   0.000     .0260054       .0409
       _bi06 |  -.0762633   .0045874   -16.62   0.000    -.0852544   -.0672722
       _bi07 |  -.2356405   .0036946   -63.78   0.000    -.2428817   -.2283993
       _bi08 |   .0397407   .0047935     8.29   0.000     .0303457    .0491358
       _bi09 |  -.0725283   .0040347   -17.98   0.000    -.0804361   -.0646205
       _bi10 |  -.2313218   .0080678   -28.67   0.000    -.2471345   -.2155091
       _bi11 |  -.1716219    .009086   -18.89   0.000    -.1894302   -.1538136
       _bi12 |  -.1512442   .0037505   -40.33   0.000     -.158595   -.1438934
       _mi01 |  -.3279004   .0112318   -29.19   0.000    -.3499144   -.3058864
       _mi02 |   .2075186   .0074262    27.94   0.000     .1929634    .2220737
       _mi03 |  -.0280066   .0041225    -6.79   0.000    -.0360867   -.0199266
       _mi05 |  -.1621874    .003239   -50.07   0.000    -.1685358    -.155839
       _mi06 |    .035191    .004053     8.68   0.000     .0272472    .0431347
       _mi07 |   .0004826   .0053076     0.09   0.928    -.0099201    .0108853
       _mi08 |   .0300919   .0041239     7.30   0.000     .0220092    .0381746
       _mi09 |  -.0131575   .0034004    -3.87   0.000    -.0198222   -.0064929
       _mi10 |  -.1930032   .0041065   -47.00   0.000    -.2010518   -.1849546
       _mi11 |  -.3189971   .0047162   -67.64   0.000    -.3282407   -.3097535
       _mi12 |  -.2944079   .0049177   -59.87   0.000    -.3040464   -.2847695
     _bocc01 |   .1149059   .0041191    27.90   0.000     .1068326    .1229791
     _bocc02 |   .0342458   .0044782     7.65   0.000     .0254687     .043023
     _bocc03 |   .0277395   .0061682     4.50   0.000     .0156501     .039829
     _bocc05 |  -.2198175   .0052624   -41.77   0.000    -.2301316   -.2095033
     _bocc06 |  -.2619318   .0751273    -3.49   0.000    -.4091786   -.1146849
     _bocc07 |  -.0926184   .0066043   -14.02   0.000    -.1055626   -.0796742
     _bocc08 |  -.3215125   .0054734   -58.74   0.000    -.3322402   -.3107849
     _bocc09 |  -.2566033    .010473   -24.50   0.000      -.27713   -.2360766
     _bocc10 |  -.0850371   .0041972   -20.26   0.000    -.0932634   -.0768108
     _bocc11 |  -.2339124   .0052278   -44.74   0.000    -.2441587   -.2236661
     _bocc12 |  -.2266222   .0049695   -45.60   0.000    -.2363622   -.2168821
     _bocc13 |  -.2883348   .0056997   -50.59   0.000    -.2995061   -.2771636
     _mocc01 |   .1676473   .0038252    43.83   0.000     .1601501    .1751444
     _mocc02 |   .0431186    .003949    10.92   0.000     .0353788    .0508585
     _mocc03 |  -.1895421    .004546   -41.69   0.000    -.1984521    -.180632
     _mocc05 |   -.223652   .0045944   -48.68   0.000    -.2326568   -.2146471
     _mocc06 |  -.1892957    .012932   -14.64   0.000     -.214642   -.1639495
     _mocc07 |  -.0730908   .0050146   -14.58   0.000    -.0829193   -.0632623
     _mocc08 |  -.0518853   .0044054   -11.78   0.000    -.0605198   -.0432508
     _mocc09 |  -.1843775   .0044114   -41.80   0.000    -.1930236   -.1757314
     _mocc10 |  -.2430816   .0042987   -56.55   0.000     -.251507   -.2346563
      year99 |   .0272301   .0029656     9.18   0.000     .0214177    .0330425
     year100 |   .0386855   .0030207    12.81   0.000      .032765     .044606
     year101 |   .0538192   .0030125    17.87   0.000     .0479149    .0597235
     year102 |   .0684263   .0029478    23.21   0.000     .0626487    .0742039
     year103 |   .0613039   .0059519    10.30   0.000     .0496384    .0729694
     year104 |   .0717441   .0059537    12.05   0.000      .060075    .0834132
     year105 |   .0642129   .0059453    10.80   0.000     .0525603    .0758656
     year106 |   .0604638   .0059438    10.17   0.000     .0488142    .0721135
     year107 |   .0643011   .0059413    10.82   0.000     .0526565    .0759458
     year108 |   .0652562   .0059542    10.96   0.000     .0535862    .0769261
       _cons |   2.480411   .0073212   338.80   0.000     2.466062     2.49476
-------------+----------------------------------------------------------------
select       |
         feb |   .1260798   .0059869    21.06   0.000     .1143456     .137814
       march |   .1460577    .006049    24.15   0.000     .1342018    .1579136
 nspouseprox |  -.6276555   .0060646  -103.49   0.000    -.6395419   -.6157691
  spouseprox |  -.1753914   .0039013   -44.96   0.000    -.1830378    -.167745
     ed_elem |   .1199159   .0105976    11.32   0.000      .099145    .1406868
       sch_9 |   .1315396   .0146937     8.95   0.000     .1027405    .1603386
      sch_10 |   .1106112   .0130154     8.50   0.000     .0851015    .1361209
      sch_11 |    .081351   .0117409     6.93   0.000     .0583392    .1043627
      sch_12 |  -.0101022   .0157788    -0.64   0.522    -.0410282    .0208237
    sch_some |   .0478855   .0049484     9.68   0.000     .0381868    .0575842
    ed_assoc |   .0433905   .0061701     7.03   0.000     .0312973    .0554836
      sch_ba |    .038827    .005361     7.24   0.000     .0283195    .0493344
      sch_ma |    .092357   .0075332    12.26   0.000     .0775921    .1071218
     sch_pro |  -.0918648    .012852    -7.15   0.000    -.1170543   -.0666754
     sch_phd |   .0804328     .01319     6.10   0.000     .0545808    .1062848
         exp |  -.0119884   .0033715    -3.56   0.000    -.0185964   -.0053803
       expsq |  -.0004372   .0002675    -1.63   0.102    -.0009615    .0000872
      expcub |   .0000234   8.31e-06     2.82   0.005     7.14e-06    .0000397
     expquar |  -3.04e-07   8.75e-08    -3.48   0.001    -4.76e-07   -1.33e-07
        _msp |   -.005869   .0056802    -1.03   0.301    -.0170019    .0052639
       _mnsp |   .0477555   .0069404     6.88   0.000     .0341526    .0613585
    hispanic |   .0594104   .0068957     8.62   0.000     .0458952    .0729257
       black |  -.2185648   .0063297   -34.53   0.000    -.2309707   -.2061589
       asian |  -.1387347   .0097495   -14.23   0.000    -.1578434    -.119626
       other |   .0539552   .0133355     4.05   0.000     .0278181    .0800924
  for_nonctz |   .0330401   .0076718     4.31   0.000     .0180037    .0480765
     for_ctz |  -.0370809   .0082943    -4.47   0.000    -.0533375   -.0208244
  pub_fedall |  -.0931405   .0093372    -9.98   0.000    -.1114411   -.0748399
   pub_state |   .0033658   .0091081     0.37   0.712    -.0144857    .0212174
   pub_local |  -.0088221   .0078802    -1.12   0.263     -.024267    .0066228
      member |   .0297437   .0047893     6.21   0.000     .0203568    .0391306
       size2 |   .0100447   .0070276     1.43   0.153     -.003729    .0238185
       size3 |  -.0500791   .0064758    -7.73   0.000    -.0627714   -.0373867
       size4 |  -.0703887   .0060735   -11.59   0.000    -.0822926   -.0584848
       size5 |  -.0700324    .005292   -13.23   0.000    -.0804045   -.0596604
       size6 |  -.1247272   .0062746   -19.88   0.000    -.1370252   -.1124293
       size7 |  -.1877635   .0056988   -32.95   0.000    -.1989331    -.176594
          ma |  -.1072477   .0072645   -14.76   0.000    -.1214857   -.0930096
         enc |  -.0260975   .0067711    -3.85   0.000    -.0393686   -.0128264
         wnc |   .2010355   .0072809    27.61   0.000     .1867652    .2153057
          sa |  -.0402175   .0065918    -6.10   0.000    -.0531372   -.0272978
         esc |  -.0769989   .0089705    -8.58   0.000    -.0945809    -.059417
         wsc |   .0870311    .007886    11.04   0.000     .0715748    .1024875
          mt |   .2505558   .0073975    33.87   0.000      .236057    .2650545
         pac |   .1177503   .0070998    16.59   0.000      .103835    .1316655
       _bi01 |   .0441752   .0293723     1.50   0.133    -.0133934    .1017438
       _bi02 |  -.0908288   .0227204    -4.00   0.000    -.1353599   -.0462976
       _bi03 |  -.0724025   .0099495    -7.28   0.000    -.0919031   -.0529019
       _bi05 |    -.07051    .009894    -7.13   0.000    -.0899019   -.0511181
       _bi06 |   .0179614   .0122801     1.46   0.144    -.0061071      .04203
       _bi07 |   .0108646   .0098571     1.10   0.270    -.0084549    .0301841
       _bi08 |  -.0886044   .0123772    -7.16   0.000    -.1128633   -.0643455
       _bi09 |  -.0186287   .0107421    -1.73   0.083    -.0396828    .0024254
       _bi10 |  -.0467522   .0214941    -2.18   0.030    -.0888799   -.0046246
       _bi11 |  -.0159746   .0242487    -0.66   0.510    -.0635013    .0315521
       _bi12 |  -.0445931    .009996    -4.46   0.000    -.0641849   -.0250013
       _mi01 |  -.0024699   .0301944    -0.08   0.935    -.0616498      .05671
       _mi02 |  -.0183238   .0200204    -0.92   0.360     -.057563    .0209154
       _mi03 |  -.0321025   .0106673    -3.01   0.003      -.05301    -.011195
       _mi05 |   .0210975   .0084793     2.49   0.013     .0044784    .0377165
       _mi06 |  -.0857712   .0102496    -8.37   0.000    -.1058601   -.0656823
       _mi07 |  -.0458141   .0138276    -3.31   0.001    -.0729156   -.0187125
       _mi08 |  -.0892673   .0105377    -8.47   0.000    -.1099208   -.0686139
       _mi09 |  -.0235099   .0089218    -2.64   0.008    -.0409963   -.0060236
       _mi10 |  -.0418437   .0106775    -3.92   0.000    -.0627712   -.0209162
       _mi11 |  -.0281564   .0122012    -2.31   0.021    -.0520702   -.0042426
       _mi12 |  -.0829694   .0124827    -6.65   0.000    -.1074349   -.0585038
     _bocc01 |   .0996225   .0107629     9.26   0.000     .0785277    .1207174
     _bocc02 |   .1279696   .0118284    10.82   0.000     .1047864    .1511527
     _bocc03 |   .0624901   .0163205     3.83   0.000     .0305026    .0944776
     _bocc05 |   .0801703   .0137913     5.81   0.000     .0531399    .1072007
     _bocc06 |  -.4918355   .1573501    -3.13   0.002     -.800236   -.1834349
     _bocc07 |  -.0682844   .0168891    -4.04   0.000    -.1013864   -.0351823
     _bocc08 |   .0552297   .0142972     3.86   0.000     .0272077    .0832516
     _bocc09 |   .0333074   .0281285     1.18   0.236    -.0218234    .0884381
     _bocc10 |   .0657429   .0109898     5.98   0.000     .0442033    .0872825
     _bocc11 |   .0994599   .0138416     7.19   0.000     .0723308     .126589
     _bocc12 |   .0999535   .0130336     7.67   0.000      .074408    .1254989
     _bocc13 |  -.0011881   .0148435    -0.08   0.936    -.0302808    .0279046
     _mocc01 |   .1369852     .00973    14.08   0.000     .1179147    .1560557
     _mocc02 |   .1300947   .0101132    12.86   0.000     .1102732    .1499162
     _mocc03 |     .01308   .0115244     1.13   0.256    -.0095073    .0356674
     _mocc05 |   .0921966   .0117742     7.83   0.000     .0691195    .1152736
     _mocc06 |   .0930024   .0346692     2.68   0.007      .025052    .1609528
     _mocc07 |   .0339597   .0128206     2.65   0.008     .0088319    .0590876
     _mocc08 |   .0740722   .0112621     6.58   0.000      .051999    .0961455
     _mocc09 |   .0992078    .011305     8.78   0.000     .0770504    .1213652
     _mocc10 |   .0911604   .0109903     8.29   0.000     .0696198    .1127011
      year99 |  -.1182876    .008102   -14.60   0.000    -.1341673    -.102408
     year100 |  -.1780767   .0080489   -22.12   0.000    -.1938522   -.1623013
     year101 |  -.2120576   .0079288   -26.75   0.000    -.2275978   -.1965173
     year102 |  -.2012577    .007814   -25.76   0.000    -.2165728   -.1859426
     year103 |  -.2531717   .0154122   -16.43   0.000     -.283379   -.2229643
     year104 |  -.2533932   .0154409   -16.41   0.000    -.2836567   -.2231296
     year105 |  -.2322969   .0154705   -15.02   0.000    -.2626184   -.2019753
     year106 |   -.226236   .0154739   -14.62   0.000    -.2565644   -.1959077
     year107 |  -.2093012    .015491   -13.51   0.000     -.239663   -.1789393
     year108 |  -.2093824   .0155106   -13.50   0.000    -.2397826   -.1789822
       _cons |   1.038308   .0191442    54.24   0.000     1.000786     1.07583
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.0782047   .0071689   -10.91   0.000    -.0922554   -.0641539
-------------+----------------------------------------------------------------
         rho |   -0.18429
       sigma |  .42435465
      lambda | -.07820467   .0071689
------------------------------------------------------------------------------

. 
. /* heckman two step with proxy in main equation */
. 
. heckman lrwage2 nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma
>  sch_pro sch_phd exp expsq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2
>  size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_
> bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 
> year99-year108 if !female&(relhead < 4), select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 s
> ch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic
>  black asian other for_nonctz for_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6
>  size7 ma enc wnc sa esc wsc mt pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc
> 05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    681555
(regression model with sample selection)        Censored obs       =    211201
                                                Uncensored obs     =    470354

                                                Wald chi2(96)      = 367936.29
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
 nspouseprox |     .00533   .0079628     0.67   0.503    -.0102768    .0209367
  spouseprox |   .0032507   .0023761     1.37   0.171    -.0014063    .0079077
     ed_elem |  -.1806814   .0042926   -42.09   0.000    -.1890948   -.1722679
       sch_9 |  -.1513115   .0056994   -26.55   0.000    -.1624822   -.1401409
      sch_10 |  -.1240752   .0051091   -24.29   0.000    -.1340888   -.1140616
      sch_11 |   -.106218   .0045658   -23.26   0.000    -.1151667   -.0972693
      sch_12 |  -.0745532   .0062735   -11.88   0.000    -.0868491   -.0622573
    sch_some |   .0815443   .0019797    41.19   0.000     .0776642    .0854245
    ed_assoc |   .1182544   .0024067    49.14   0.000     .1135374    .1229715
      sch_ba |   .2943679   .0021225   138.69   0.000     .2902078     .298528
      sch_ma |    .410151   .0030365   135.07   0.000     .4041996    .4161024
     sch_pro |   .7405658   .0052203   141.86   0.000     .7303342    .7507973
     sch_phd |   .6398605   .0050142   127.61   0.000     .6300328    .6496882
         exp |   .0485072   .0012252    39.59   0.000     .0461058    .0509086
       expsq |  -.0018166   .0000996   -18.24   0.000    -.0020118   -.0016214
      expcub |   .0000301   3.16e-06     9.54   0.000     .0000239    .0000363
     expquar |  -2.02e-07   3.39e-08    -5.96   0.000    -2.68e-07   -1.36e-07
        _msp |   .1083804   .0021086    51.40   0.000     .1042476    .1125132
       _mnsp |   .0317073   .0026443    11.99   0.000     .0265246      .03689
       black |  -.1503264   .0037153   -40.46   0.000    -.1576082   -.1430445
       asian |  -.0243093   .0042176    -5.76   0.000    -.0325756    -.016043
       other |  -.0626825   .0048779   -12.85   0.000     -.072243   -.0531221
    hispanic |  -.1378975   .0027012   -51.05   0.000    -.1431918   -.1326032
  for_nonctz |  -.1757468   .0030008   -58.57   0.000    -.1816283   -.1698653
     for_ctz |  -.0724411   .0033982   -21.32   0.000    -.0791015   -.0657807
       size2 |   .0643603   .0025738    25.01   0.000     .0593158    .0694047
       size3 |   .0906689   .0025013    36.25   0.000     .0857665    .0955713
       size4 |    .122514    .002415    50.73   0.000     .1177807    .1272473
       size5 |   .1548472   .0021259    72.84   0.000     .1506805    .1590139
       size6 |   .2561775   .0027644    92.67   0.000     .2507594    .2615956
       size7 |   .2622259   .0030421    86.20   0.000     .2562635    .2681883
          ma |  -.0227875   .0031951    -7.13   0.000    -.0290498   -.0165252
         enc |  -.0395346   .0026831   -14.73   0.000    -.0447933   -.0342759
         wnc |  -.0968287   .0034061   -28.43   0.000    -.1035046   -.0901529
          sa |  -.0494714    .002648   -18.68   0.000    -.0546614   -.0442814
         esc |  -.0829414   .0036579   -22.67   0.000    -.0901107   -.0757721
         wsc |  -.1120277   .0031648   -35.40   0.000    -.1182307   -.1058247
          mt |  -.0333917   .0037329    -8.95   0.000    -.0407081   -.0260752
         pac |    .025415   .0030195     8.42   0.000     .0194969     .031333
  pub_fedall |   .0513609   .0038065    13.49   0.000     .0439002    .0588216
   pub_state |  -.2030213    .003412   -59.50   0.000    -.2097086   -.1963339
   pub_local |   -.183333   .0030022   -61.07   0.000    -.1892172   -.1774488
      member |   .1635775   .0018847    86.79   0.000     .1598835    .1672715
       _bi01 |  -.2267365   .0107052   -21.18   0.000    -.2477183   -.2057547
       _bi02 |   .1678439   .0084637    19.83   0.000     .1512554    .1844324
       _bi03 |   .0221154   .0038886     5.69   0.000     .0144939    .0297369
       _bi05 |   .0340078   .0038743     8.78   0.000     .0264143    .0416014
       _bi06 |  -.0764009   .0046016   -16.60   0.000    -.0854198    -.067382
       _bi07 |  -.2357225   .0037052   -63.62   0.000    -.2429847   -.2284604
       _bi08 |   .0404893   .0048914     8.28   0.000     .0309023    .0500763
       _bi09 |  -.0723863   .0040497   -17.87   0.000    -.0803236   -.0644491
       _bi10 |  -.2309251   .0081021   -28.50   0.000    -.2468049   -.2150453
       _bi11 |  -.1714904   .0091099   -18.82   0.000    -.1893454   -.1536354
       _bi12 |  -.1508681   .0037871   -39.84   0.000    -.1582907   -.1434455
       _mi01 |  -.3278685   .0112601   -29.12   0.000    -.3499379   -.3057991
       _mi02 |   .2075517   .0074465    27.87   0.000     .1929569    .2221466
       _mi03 |  -.0277592   .0041465    -6.69   0.000    -.0358862   -.0196323
       _mi05 |  -.1623701   .0032544   -49.89   0.000    -.1687486   -.1559916
       _mi06 |   .0358878   .0041613     8.62   0.000     .0277317    .0440438
       _mi07 |   .0008923   .0053421     0.17   0.867     -.009578    .0113626
       _mi08 |    .030895   .0042404     7.29   0.000      .022584    .0392061
       _mi09 |  -.0129507   .0034182    -3.79   0.000    -.0196502   -.0062511
       _mi10 |  -.1926286     .00414   -46.53   0.000    -.2007428   -.1845144
       _mi11 |  -.3187605   .0047352   -67.32   0.000    -.3280414   -.3094796
       _mi12 |  -.2936683   .0050044   -58.68   0.000    -.3034767   -.2838599
     _bocc01 |   .1140741   .0042515    26.83   0.000     .1057414    .1224068
     _bocc02 |   .0332283   .0046645     7.12   0.000      .024086    .0423706
     _bocc03 |   .0272627   .0062146     4.39   0.000     .0150822    .0394431
     _bocc05 |  -.2204491   .0053386   -41.29   0.000    -.2309126   -.2099856
     _bocc06 |  -.2570965    .075454    -3.41   0.001    -.4049837   -.1092094
     _bocc07 |  -.0920367   .0066579   -13.82   0.000     -.105086   -.0789874
     _bocc08 |  -.3219573   .0055175   -58.35   0.000    -.3327713   -.3111432
     _bocc09 |  -.2568604   .0105041   -24.45   0.000     -.277448   -.2362727
     _bocc10 |  -.0855837   .0042624   -20.08   0.000     -.093938   -.0772295
     _bocc11 |  -.2347222   .0053366   -43.98   0.000    -.2451818   -.2242626
     _bocc12 |  -.2274791   .0050849   -44.74   0.000    -.2374453   -.2175129
     _bocc13 |  -.2883322   .0057134   -50.47   0.000    -.2995302   -.2771343
     _mocc01 |   .1664827   .0040931    40.67   0.000     .1584603    .1745051
     _mocc02 |   .0420373   .0041805    10.06   0.000     .0338435     .050231
     _mocc03 |  -.1896504   .0045584   -41.60   0.000    -.1985847   -.1807162
     _mocc05 |  -.2243963   .0047034   -47.71   0.000    -.2336148   -.2151778
     _mocc06 |   -.190097   .0129999   -14.62   0.000    -.2155763   -.1646177
     _mocc07 |  -.0734048     .00504   -14.56   0.000    -.0832831   -.0635266
     _mocc08 |  -.0525189   .0044836   -11.71   0.000    -.0613066   -.0437313
     _mocc09 |  -.1852063   .0045423   -40.77   0.000    -.1941092   -.1763035
     _mocc10 |  -.2438818   .0044141   -55.25   0.000    -.2525334   -.2352302
      year99 |   .0281984   .0031873     8.85   0.000     .0219514    .0344454
     year100 |   .0401146   .0034883    11.50   0.000     .0332775    .0469516
     year101 |   .0555691   .0036833    15.09   0.000     .0483499    .0627882
     year102 |   .0700523   .0035596    19.68   0.000     .0630756     .077029
     year103 |   .0633809   .0064849     9.77   0.000     .0506708     .076091
     year104 |   .0737996    .006487    11.38   0.000     .0610854    .0865138
     year105 |   .0661183   .0064004    10.33   0.000     .0535738    .0786628
     year106 |   .0623168   .0063759     9.77   0.000     .0498203    .0748134
     year107 |   .0660377   .0063137    10.46   0.000      .053663    .0784124
     year108 |   .0669993   .0063234    10.60   0.000     .0546057    .0793929
       _cons |   2.484587   .0088572   280.52   0.000     2.467227    2.501947
-------------+----------------------------------------------------------------
select       |
         feb |   .1260798   .0059869    21.06   0.000     .1143456     .137814
       march |   .1460577    .006049    24.15   0.000     .1342018    .1579136
 nspouseprox |  -.6276555   .0060646  -103.49   0.000    -.6395419   -.6157691
  spouseprox |  -.1753914   .0039013   -44.96   0.000    -.1830378    -.167745
     ed_elem |   .1199159   .0105976    11.32   0.000      .099145    .1406868
       sch_9 |   .1315396   .0146937     8.95   0.000     .1027405    .1603386
      sch_10 |   .1106112   .0130154     8.50   0.000     .0851015    .1361209
      sch_11 |    .081351   .0117409     6.93   0.000     .0583392    .1043627
      sch_12 |  -.0101022   .0157788    -0.64   0.522    -.0410282    .0208237
    sch_some |   .0478855   .0049484     9.68   0.000     .0381868    .0575842
    ed_assoc |   .0433905   .0061701     7.03   0.000     .0312973    .0554836
      sch_ba |    .038827    .005361     7.24   0.000     .0283195    .0493344
      sch_ma |    .092357   .0075332    12.26   0.000     .0775921    .1071218
     sch_pro |  -.0918648    .012852    -7.15   0.000    -.1170543   -.0666754
     sch_phd |   .0804328     .01319     6.10   0.000     .0545808    .1062848
         exp |  -.0119884   .0033715    -3.56   0.000    -.0185964   -.0053803
       expsq |  -.0004372   .0002675    -1.63   0.102    -.0009615    .0000872
      expcub |   .0000234   8.31e-06     2.82   0.005     7.14e-06    .0000397
     expquar |  -3.04e-07   8.75e-08    -3.48   0.001    -4.76e-07   -1.33e-07
        _msp |   -.005869   .0056802    -1.03   0.301    -.0170019    .0052639
       _mnsp |   .0477555   .0069404     6.88   0.000     .0341526    .0613585
    hispanic |   .0594104   .0068957     8.62   0.000     .0458952    .0729257
       black |  -.2185648   .0063297   -34.53   0.000    -.2309707   -.2061589
       asian |  -.1387347   .0097495   -14.23   0.000    -.1578434    -.119626
       other |   .0539552   .0133355     4.05   0.000     .0278181    .0800924
  for_nonctz |   .0330401   .0076718     4.31   0.000     .0180037    .0480765
     for_ctz |  -.0370809   .0082943    -4.47   0.000    -.0533375   -.0208244
  pub_fedall |  -.0931405   .0093372    -9.98   0.000    -.1114411   -.0748399
   pub_state |   .0033658   .0091081     0.37   0.712    -.0144857    .0212174
   pub_local |  -.0088221   .0078802    -1.12   0.263     -.024267    .0066228
      member |   .0297437   .0047893     6.21   0.000     .0203568    .0391306
       size2 |   .0100447   .0070276     1.43   0.153     -.003729    .0238185
       size3 |  -.0500791   .0064758    -7.73   0.000    -.0627714   -.0373867
       size4 |  -.0703887   .0060735   -11.59   0.000    -.0822926   -.0584848
       size5 |  -.0700324    .005292   -13.23   0.000    -.0804045   -.0596604
       size6 |  -.1247272   .0062746   -19.88   0.000    -.1370252   -.1124293
       size7 |  -.1877635   .0056988   -32.95   0.000    -.1989331    -.176594
          ma |  -.1072477   .0072645   -14.76   0.000    -.1214857   -.0930096
         enc |  -.0260975   .0067711    -3.85   0.000    -.0393686   -.0128264
         wnc |   .2010355   .0072809    27.61   0.000     .1867652    .2153057
          sa |  -.0402175   .0065918    -6.10   0.000    -.0531372   -.0272978
         esc |  -.0769989   .0089705    -8.58   0.000    -.0945809    -.059417
         wsc |   .0870311    .007886    11.04   0.000     .0715748    .1024875
          mt |   .2505558   .0073975    33.87   0.000      .236057    .2650545
         pac |   .1177503   .0070998    16.59   0.000      .103835    .1316655
       _bi01 |   .0441752   .0293723     1.50   0.133    -.0133934    .1017438
       _bi02 |  -.0908288   .0227204    -4.00   0.000    -.1353599   -.0462976
       _bi03 |  -.0724025   .0099495    -7.28   0.000    -.0919031   -.0529019
       _bi05 |    -.07051    .009894    -7.13   0.000    -.0899019   -.0511181
       _bi06 |   .0179614   .0122801     1.46   0.144    -.0061071      .04203
       _bi07 |   .0108646   .0098571     1.10   0.270    -.0084549    .0301841
       _bi08 |  -.0886044   .0123772    -7.16   0.000    -.1128633   -.0643455
       _bi09 |  -.0186287   .0107421    -1.73   0.083    -.0396828    .0024254
       _bi10 |  -.0467522   .0214941    -2.18   0.030    -.0888799   -.0046246
       _bi11 |  -.0159746   .0242487    -0.66   0.510    -.0635013    .0315521
       _bi12 |  -.0445931    .009996    -4.46   0.000    -.0641849   -.0250013
       _mi01 |  -.0024699   .0301944    -0.08   0.935    -.0616498      .05671
       _mi02 |  -.0183238   .0200204    -0.92   0.360     -.057563    .0209154
       _mi03 |  -.0321025   .0106673    -3.01   0.003      -.05301    -.011195
       _mi05 |   .0210975   .0084793     2.49   0.013     .0044784    .0377165
       _mi06 |  -.0857712   .0102496    -8.37   0.000    -.1058601   -.0656823
       _mi07 |  -.0458141   .0138276    -3.31   0.001    -.0729156   -.0187125
       _mi08 |  -.0892673   .0105377    -8.47   0.000    -.1099208   -.0686139
       _mi09 |  -.0235099   .0089218    -2.64   0.008    -.0409963   -.0060236
       _mi10 |  -.0418437   .0106775    -3.92   0.000    -.0627712   -.0209162
       _mi11 |  -.0281564   .0122012    -2.31   0.021    -.0520702   -.0042426
       _mi12 |  -.0829694   .0124827    -6.65   0.000    -.1074349   -.0585038
     _bocc01 |   .0996225   .0107629     9.26   0.000     .0785277    .1207174
     _bocc02 |   .1279696   .0118284    10.82   0.000     .1047864    .1511527
     _bocc03 |   .0624901   .0163205     3.83   0.000     .0305026    .0944776
     _bocc05 |   .0801703   .0137913     5.81   0.000     .0531399    .1072007
     _bocc06 |  -.4918355   .1573501    -3.13   0.002     -.800236   -.1834349
     _bocc07 |  -.0682844   .0168891    -4.04   0.000    -.1013864   -.0351823
     _bocc08 |   .0552297   .0142972     3.86   0.000     .0272077    .0832516
     _bocc09 |   .0333074   .0281285     1.18   0.236    -.0218234    .0884381
     _bocc10 |   .0657429   .0109898     5.98   0.000     .0442033    .0872825
     _bocc11 |   .0994599   .0138416     7.19   0.000     .0723308     .126589
     _bocc12 |   .0999535   .0130336     7.67   0.000      .074408    .1254989
     _bocc13 |  -.0011881   .0148435    -0.08   0.936    -.0302808    .0279046
     _mocc01 |   .1369852     .00973    14.08   0.000     .1179147    .1560557
     _mocc02 |   .1300947   .0101132    12.86   0.000     .1102732    .1499162
     _mocc03 |     .01308   .0115244     1.13   0.256    -.0095073    .0356674
     _mocc05 |   .0921966   .0117742     7.83   0.000     .0691195    .1152736
     _mocc06 |   .0930024   .0346692     2.68   0.007      .025052    .1609528
     _mocc07 |   .0339597   .0128206     2.65   0.008     .0088319    .0590876
     _mocc08 |   .0740722   .0112621     6.58   0.000      .051999    .0961455
     _mocc09 |   .0992078    .011305     8.78   0.000     .0770504    .1213652
     _mocc10 |   .0911604   .0109903     8.29   0.000     .0696198    .1127011
      year99 |  -.1182876    .008102   -14.60   0.000    -.1341673    -.102408
     year100 |  -.1780767   .0080489   -22.12   0.000    -.1938522   -.1623013
     year101 |  -.2120576   .0079288   -26.75   0.000    -.2275978   -.1965173
     year102 |  -.2012577    .007814   -25.76   0.000    -.2165728   -.1859426
     year103 |  -.2531717   .0154122   -16.43   0.000     -.283379   -.2229643
     year104 |  -.2533932   .0154409   -16.41   0.000    -.2836567   -.2231296
     year105 |  -.2322969   .0154705   -15.02   0.000    -.2626184   -.2019753
     year106 |   -.226236   .0154739   -14.62   0.000    -.2565644   -.1959077
     year107 |  -.2093012    .015491   -13.51   0.000     -.239663   -.1789393
     year108 |  -.2093824   .0155106   -13.50   0.000    -.2397826   -.1789822
       _cons |   1.038308   .0191442    54.24   0.000     1.000786     1.07583
-------------+----------------------------------------------------------------
mills        |
      lambda |   -.094845   .0218243    -4.35   0.000    -.1376199   -.0520701
-------------+----------------------------------------------------------------
         rho |   -0.22263
       sigma |  .42602828
      lambda | -.09484501   .0218243
------------------------------------------------------------------------------

. 
. predict selecthatcohead
(option xb assumed; fitted values)

. 
. 
. /* women */
. 
. /*OLS */
. 
. reg lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq 
> expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz size2 size3 size4 size5 size6 siz
> e7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-_mi03
>  _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if female&(re
> lhead < 4)

      Source |       SS       df       MS              Number of obs =  393078
-------------+------------------------------           F( 94,392983) = 3563.48
       Model |  48347.6022    94  514.336193           Prob > F      =  0.0000
    Residual |  56721.3936392983  .144335489           R-squared     =  0.4602
-------------+------------------------------           Adj R-squared =  0.4600
       Total |  105068.996393077  .267298763           Root MSE      =  .37992

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      t    P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
     ed_elem |  -.1677566   .0050582   -33.17   0.000    -.1776706   -.1578427
       sch_9 |  -.1638337    .006703   -24.44   0.000    -.1769714    -.150696
      sch_10 |  -.1529454   .0056879   -26.89   0.000    -.1640936   -.1417973
      sch_11 |   -.123063   .0050613   -24.31   0.000    -.1329831   -.1131429
      sch_12 |  -.0794107   .0072801   -10.91   0.000    -.0936795    -.065142
    sch_some |   .0910194   .0018396    49.48   0.000     .0874139    .0946249
    ed_assoc |   .1733929   .0022041    78.67   0.000     .1690729    .1777129
      sch_ba |   .3319554   .0019806   167.60   0.000     .3280735    .3358373
      sch_ma |    .493447   .0026405   186.87   0.000     .4882717    .4986224
     sch_pro |   .7612842   .0056014   135.91   0.000     .7503057    .7722627
     sch_phd |   .7183514   .0059774   120.18   0.000     .7066358     .730067
         exp |   .0477988   .0010781    44.34   0.000     .0456858    .0499118
       expsq |  -.0023629    .000091   -25.98   0.000    -.0025412   -.0021846
      expcub |   .0000538   2.94e-06    18.29   0.000      .000048    .0000596
     expquar |  -4.66e-07   3.20e-08   -14.58   0.000    -5.28e-07   -4.03e-07
        _msp |   .0150021    .001841     8.15   0.000     .0113937    .0186104
       _mnsp |  -.0027188   .0021692    -1.25   0.210    -.0069703    .0015328
       black |  -.0968997   .0022144   -43.76   0.000    -.1012398   -.0925597
       asian |  -.0168467   .0038561    -4.37   0.000    -.0244045   -.0092889
       other |  -.0396244   .0044847    -8.84   0.000    -.0484142   -.0308346
    hispanic |  -.0985474   .0025661   -38.40   0.000    -.1035769    -.093518
  for_nonctz |  -.1602217   .0032475   -49.34   0.000    -.1665867   -.1538567
     for_ctz |  -.0590711   .0033007   -17.90   0.000    -.0655405   -.0526018
       size2 |   .0655885   .0024963    26.27   0.000     .0606959    .0704812
       size3 |   .0949199   .0023874    39.76   0.000     .0902406    .0995992
       size4 |   .1253171   .0022378    56.00   0.000      .120931    .1297032
       size5 |   .1609553   .0019447    82.77   0.000     .1571439    .1647668
       size6 |   .2611804     .00236   110.67   0.000     .2565549     .265806
       size7 |   .2623311   .0021775   120.47   0.000     .2580633    .2665989
          ma |  -.0289554   .0028721   -10.08   0.000    -.0345847    -.023326
         enc |  -.0607053   .0026239   -23.14   0.000     -.065848   -.0555625
         wnc |  -.0944517   .0026285   -35.93   0.000    -.0996034   -.0892999
          sa |  -.0660131   .0025239   -26.16   0.000    -.0709599   -.0610663
         esc |    -.11833   .0034054   -34.75   0.000    -.1250045   -.1116555
         wsc |  -.1406942    .002942   -47.82   0.000    -.1464604   -.1349281
          mt |   -.050586   .0027142   -18.64   0.000    -.0559057   -.0452663
         pac |   .0268322   .0027186     9.87   0.000     .0215038    .0321607
  pub_fedall |   .0914062   .0040491    22.57   0.000     .0834702    .0993422
   pub_state |  -.1635099   .0033446   -48.89   0.000    -.1700652   -.1569545
   pub_local |  -.1985737   .0030721   -64.64   0.000    -.2045949   -.1925525
      member |   .1147915   .0020033    57.30   0.000     .1108651    .1187179
       _bi01 |  -.2336228   .0140731   -16.60   0.000    -.2612057     -.20604
       _bi02 |   .1458721   .0206396     7.07   0.000     .1054191    .1863252
       _bi03 |  -.0599981    .009094    -6.60   0.000    -.0778221    -.042174
       _bi05 |   .0310049   .0052139     5.95   0.000     .0207858     .041224
       _bi06 |  -.0691761   .0060464   -11.44   0.000    -.0810268   -.0573253
       _bi07 |   -.278188   .0039387   -70.63   0.000    -.2859077   -.2704683
       _bi08 |  -.0316298   .0039837    -7.94   0.000    -.0394377   -.0238219
       _bi09 |  -.0896333   .0049155   -18.24   0.000    -.0992675   -.0799992
       _bi10 |  -.1959784   .0062201   -31.51   0.000    -.2081695   -.1837872
       _bi11 |  -.1861557   .0096563   -19.28   0.000    -.2050818   -.1672295
       _bi12 |  -.1331016   .0031863   -41.77   0.000    -.1393467   -.1268565
       _mi01 |  -.2385855   .0171884   -13.88   0.000    -.2722743   -.2048967
       _mi02 |   .1615859   .0181848     8.89   0.000     .1259442    .1972276
       _mi03 |  -.0652155   .0077992    -8.36   0.000    -.0805018   -.0499292
       _mi05 |  -.2030747   .0037573   -54.05   0.000    -.2104388   -.1957106
       _mi06 |  -.0111144    .006392    -1.74   0.082    -.0236424    .0014136
       _mi07 |   .0089864   .0058569     1.53   0.125     -.002493    .0204658
       _mi08 |  -.0412905    .003742   -11.03   0.000    -.0486247   -.0339564
       _mi09 |  -.0515296   .0037848   -13.61   0.000    -.0589477   -.0441114
       _mi10 |  -.1458735   .0031559   -46.22   0.000     -.152059    -.139688
       _mi11 |  -.2785956   .0046962   -59.32   0.000    -.2878001   -.2693911
       _mi12 |  -.2250905   .0052753   -42.67   0.000    -.2354299    -.214751
     _bocc01 |   .1462533   .0040522    36.09   0.000     .1383111    .1541954
     _bocc02 |   .0884743   .0042931    20.61   0.000       .08006    .0968887
     _bocc03 |   .0894122   .0057263    15.61   0.000     .0781889    .1006356
     _bocc05 |  -.0914766   .0039079   -23.41   0.000     -.099136   -.0838172
     _bocc06 |  -.3027659   .0168179   -18.00   0.000    -.3357284   -.2698033
     _bocc07 |   .0325362   .0113261     2.87   0.004     .0103373    .0547351
     _bocc08 |  -.2066121   .0045264   -45.65   0.000    -.2154838   -.1977404
     _bocc09 |  -.1960413   .0164283   -11.93   0.000    -.2282402   -.1638423
     _bocc10 |  -.0542614   .0069645    -7.79   0.000    -.0679117   -.0406111
     _bocc11 |  -.2250234   .0057747   -38.97   0.000    -.2363417   -.2137052
     _bocc12 |  -.1152742   .0111164   -10.37   0.000    -.1370621   -.0934864
     _bocc13 |  -.1906191    .007857   -24.26   0.000    -.2060186   -.1752195
     _mocc01 |   .2262626   .0038058    59.45   0.000     .2188034    .2337218
     _mocc02 |   .0879892   .0038002    23.15   0.000     .0805409    .0954374
     _mocc03 |  -.1535856   .0044777   -34.30   0.000    -.1623617   -.1448094
     _mocc05 |  -.0326739   .0035759    -9.14   0.000    -.0396826   -.0256652
     _mocc06 |  -.1253612   .0181319    -6.91   0.000    -.1608991   -.0898232
     _mocc07 |   .0825629    .015736     5.25   0.000     .0517207    .1134051
     _mocc08 |   .1303953   .0134081     9.73   0.000     .1041158    .1566747
     _mocc09 |  -.1543992   .0052307   -29.52   0.000    -.1646513   -.1441472
     _mocc10 |  -.1354746   .0070689   -19.17   0.000    -.1493294   -.1216199
      year99 |   .0133536   .0029155     4.58   0.000     .0076394    .0190678
     year100 |   .0218372   .0029247     7.47   0.000     .0161048    .0275696
     year101 |   .0392118   .0028931    13.55   0.000     .0335413    .0448823
     year102 |   .0558119   .0028408    19.65   0.000     .0502441    .0613796
     year103 |    .019857   .0059529     3.34   0.001     .0081896    .0315245
     year104 |    .026131   .0059625     4.38   0.000     .0144448    .0378173
     year105 |   .0189439   .0059654     3.18   0.001      .007252    .0306359
     year106 |   .0161229   .0059667     2.70   0.007     .0044284    .0278174
     year107 |   .0180614    .005964     3.03   0.002     .0063721    .0297508
     year108 |   .0153006   .0059701     2.56   0.010     .0035993    .0270019
       _cons |    2.33959   .0065767   355.74   0.000       2.3267     2.35248
------------------------------------------------------------------------------

. 
. predict temp
(option xb assumed; fitted values)

. 
. replace olshatcohead = temp if female
(672099 real changes made)

. 
. drop temp

. 
. /* heckman two step with proxy in exclusions */
. 
. heckman lrwage2 ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp ex
> psq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2 size3 size4 size5 size
> 6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_bi03 _bi05-_bi12 _mi01-
> _mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108 if femal
> e&(relhead < 4), select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed
> _assoc sch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic black asian other for_n
> onctz for_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 size7 ma enc wnc sa esc
>  wsc mt pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc
> 03 _mocc05-_mocc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    565387
(regression model with sample selection)        Censored obs       =    172309
                                                Uncensored obs     =    393078

                                                Wald chi2(94)      = 331834.25
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
     ed_elem |  -.1717495    .005094   -33.72   0.000    -.1817337   -.1617654
       sch_9 |  -.1676827   .0067435   -24.87   0.000    -.1808997   -.1544657
      sch_10 |    -.15545   .0057179   -27.19   0.000    -.1666569   -.1442432
      sch_11 |  -.1257657   .0050903   -24.71   0.000    -.1357425   -.1157889
      sch_12 |   -.079829   .0073111   -10.92   0.000    -.0941584   -.0654996
    sch_some |   .0893638   .0018539    48.20   0.000     .0857303    .0929974
    ed_assoc |   .1714738   .0022209    77.21   0.000     .1671209    .1758267
      sch_ba |   .3299919   .0019974   165.21   0.000      .326077    .3339068
      sch_ma |   .4893448   .0026789   182.67   0.000     .4840944    .4945953
     sch_pro |   .7599189   .0056281   135.02   0.000      .748888    .7709499
     sch_phd |   .7138135   .0060206   118.56   0.000     .7020134    .7256137
         exp |   .0479607   .0010835    44.26   0.000      .045837    .0500843
       expsq |  -.0023302   .0000914   -25.48   0.000    -.0025094    -.002151
      expcub |   .0000524   2.96e-06    17.72   0.000     .0000466    .0000582
     expquar |  -4.49e-07   3.21e-08   -13.97   0.000    -5.12e-07   -3.86e-07
        _msp |   .0174966   .0018635     9.39   0.000     .0138441    .0211491
       _mnsp |  -.0046513   .0021864    -2.13   0.033    -.0089366    -.000366
       black |  -.0879068   .0023679   -37.12   0.000    -.0925479   -.0832657
       asian |  -.0107387   .0039114    -2.75   0.006    -.0184049   -.0030726
       other |  -.0392475   .0045067    -8.71   0.000    -.0480806   -.0304145
    hispanic |  -.0994574   .0025793   -38.56   0.000    -.1045126   -.0944021
  for_nonctz |  -.1613316   .0032633   -49.44   0.000    -.1677275   -.1549356
     for_ctz |  -.0581961   .0033151   -17.56   0.000    -.0646935   -.0516987
       size2 |   .0648374   .0025097    25.83   0.000     .0599185    .0697563
       size3 |   .0966989   .0024041    40.22   0.000     .0919869     .101411
       size4 |   .1279557    .002261    56.59   0.000     .1235241    .1323873
       size5 |   .1637489   .0019702    83.11   0.000     .1598874    .1676104
       size6 |   .2657267   .0024064   110.43   0.000     .2610103    .2704431
       size7 |   .2694679    .002281   118.13   0.000     .2649972    .2739386
          ma |  -.0252793   .0029035    -8.71   0.000    -.0309701   -.0195885
         enc |  -.0600414   .0026362   -22.78   0.000    -.0652083   -.0548745
         wnc |    -.10117   .0027107   -37.32   0.000    -.1064829   -.0958571
          sa |  -.0646803   .0025378   -25.49   0.000    -.0696542   -.0597063
         esc |   -.116685   .0034236   -34.08   0.000    -.1233952   -.1099748
         wsc |  -.1438856   .0029697   -48.45   0.000    -.1497061   -.1380651
          mt |  -.0582202   .0028141   -20.69   0.000    -.0637358   -.0527047
         pac |   .0234776    .002748     8.54   0.000     .0180916    .0288636
  pub_fedall |   .0941789   .0040748    23.11   0.000     .0861925    .1021653
   pub_state |   -.162838   .0033609   -48.45   0.000    -.1694252   -.1562508
   pub_local |  -.1991008   .0030867   -64.50   0.000    -.2051507   -.1930509
      member |   .1113307    .002037    54.65   0.000     .1073383    .1153231
       _bi01 |  -.2348343   .0141461   -16.60   0.000    -.2625602   -.2071084
       _bi02 |   .1483068   .0207436     7.15   0.000     .1076501    .1889636
       _bi03 |  -.0577095   .0091389    -6.31   0.000    -.0756215   -.0397975
       _bi05 |   .0329113   .0052409     6.28   0.000     .0226392    .0431834
       _bi06 |   -.071132   .0060786   -11.70   0.000    -.0830459   -.0592181
       _bi07 |  -.2774968   .0039578   -70.11   0.000    -.2852539   -.2697397
       _bi08 |  -.0294584   .0040069    -7.35   0.000    -.0373117    -.021605
       _bi09 |  -.0900323   .0049391   -18.23   0.000    -.0997127    -.080352
       _bi10 |    -.19434   .0062511   -31.09   0.000     -.206592    -.182088
       _bi11 |  -.1831619   .0097048   -18.87   0.000    -.2021829   -.1641408
       _bi12 |  -.1317781   .0032035   -41.14   0.000    -.1380569   -.1254993
       _mi01 |  -.2338609    .017271   -13.54   0.000    -.2677114   -.2000104
       _mi02 |   .1617769   .0182754     8.85   0.000     .1259577    .1975961
       _mi03 |  -.0633698   .0078357    -8.09   0.000    -.0787274   -.0480122
       _mi05 |  -.2030754   .0037743   -53.80   0.000     -.210473   -.1956779
       _mi06 |  -.0091682   .0064223    -1.43   0.153    -.0217557    .0034193
       _mi07 |   .0103029   .0058846     1.75   0.080    -.0012306    .0218364
       _mi08 |  -.0382212   .0037689   -10.14   0.000    -.0456081   -.0308343
       _mi09 |  -.0506093    .003803   -13.31   0.000     -.058063   -.0431556
       _mi10 |  -.1445504   .0031726   -45.56   0.000    -.1507686   -.1383322
       _mi11 |  -.2773244   .0047185   -58.77   0.000    -.2865725   -.2680763
       _mi12 |  -.2187413   .0053282   -41.05   0.000    -.2291845   -.2082982
     _bocc01 |    .143345   .0040797    35.14   0.000      .135349     .151341
     _bocc02 |   .0871647   .0043149    20.20   0.000     .0787076    .0956217
     _bocc03 |   .0882403   .0057543    15.33   0.000     .0769621    .0995184
     _bocc05 |  -.0914869    .003926   -23.30   0.000    -.0991817   -.0837921
     _bocc06 |  -.2829524   .0169614   -16.68   0.000    -.3161961   -.2497088
     _bocc07 |   .0346428   .0113782     3.04   0.002      .012342    .0569436
     _bocc08 |  -.2065659   .0045473   -45.43   0.000    -.2154784   -.1976534
     _bocc09 |  -.1952035   .0165115   -11.82   0.000    -.2275655   -.1628415
     _bocc10 |  -.0568028   .0070017    -8.11   0.000    -.0705259   -.0430797
     _bocc11 |  -.2296402   .0058177   -39.47   0.000    -.2410427   -.2182377
     _bocc12 |  -.1154226    .011167   -10.34   0.000    -.1373095   -.0935356
     _bocc13 |  -.1940866   .0079022   -24.56   0.000    -.2095747   -.1785986
     _mocc01 |   .2209158    .003853    57.34   0.000      .213364    .2284676
     _mocc02 |   .0849907   .0038264    22.21   0.000     .0774911    .0924902
     _mocc03 |  -.1530151    .004497   -34.03   0.000     -.161829   -.1442012
     _mocc05 |  -.0352841   .0035991    -9.80   0.000    -.0423381     -.02823
     _mocc06 |  -.1332887   .0182337    -7.31   0.000    -.1690261   -.0975514
     _mocc07 |   .0829217    .015804     5.25   0.000     .0519465     .113897
     _mocc08 |   .1282701   .0134684     9.52   0.000     .1018725    .1546677
     _mocc09 |  -.1597674   .0052766   -30.28   0.000    -.1701094   -.1494254
     _mocc10 |  -.1382706   .0071046   -19.46   0.000    -.1521953    -.124346
      year99 |   .0167924   .0029466     5.70   0.000     .0110171    .0225677
     year100 |   .0274371   .0029827     9.20   0.000     .0215911    .0332831
     year101 |   .0459376   .0029706    15.46   0.000     .0401154    .0517599
     year102 |   .0622827   .0029144    21.37   0.000     .0565705    .0679949
     year103 |   .0295573   .0060445     4.89   0.000     .0177103    .0414043
     year104 |   .0355969    .006051     5.88   0.000     .0237372    .0474567
     year105 |   .0277215   .0060454     4.59   0.000     .0158728    .0395703
     year106 |   .0245529   .0060426     4.06   0.000     .0127095    .0363963
     year107 |   .0268604   .0060443     4.44   0.000     .0150138    .0387071
     year108 |   .0238368   .0060473     3.94   0.000     .0119844    .0356892
       _cons |    2.35806   .0068184   345.84   0.000     2.344696    2.371424
-------------+----------------------------------------------------------------
select       |
         feb |   .1180443   .0065959    17.90   0.000     .1051165    .1309721
       march |    .130903     .00664    19.71   0.000     .1178887    .1439172
 nspouseprox |  -.6950031    .006453  -107.70   0.000    -.7076508   -.6823554
  spouseprox |  -.2306574   .0045585   -50.60   0.000     -.239592   -.2217228
     ed_elem |   .1600762   .0148658    10.77   0.000     .1309397    .1892127
       sch_9 |   .1276569   .0200441     6.37   0.000     .0883711    .1669426
      sch_10 |   .0797942    .016526     4.83   0.000     .0474039    .1121845
      sch_11 |   .0799414   .0148543     5.38   0.000     .0508276    .1090552
      sch_12 |   .0118676   .0205354     0.58   0.563     -.028381    .0521161
    sch_some |   .0381413   .0053339     7.15   0.000     .0276871    .0485955
    ed_assoc |   .0470621   .0064357     7.31   0.000     .0344484    .0596759
      sch_ba |   .0489183    .005753     8.50   0.000     .0376427    .0601939
      sch_ma |   .1107824   .0078708    14.08   0.000     .0953559    .1262089
     sch_pro |   .0287375   .0163786     1.75   0.079     -.003364     .060839
     sch_phd |   .1184659    .018242     6.49   0.000     .0827123    .1542195
         exp |  -.0229285     .00337    -6.80   0.000    -.0295337   -.0163234
       expsq |   .0003215   .0002774     1.16   0.247    -.0002222    .0008652
      expcub |   6.67e-06   8.80e-06     0.76   0.449    -.0000106    .0000239
     expquar |  -1.88e-07   9.41e-08    -1.99   0.046    -3.72e-07   -3.14e-09
        _msp |  -.0298802   .0058971    -5.07   0.000    -.0414382   -.0183222
       _mnsp |   .0487579   .0064884     7.51   0.000     .0360407     .061475
    hispanic |   .0393411   .0076331     5.15   0.000     .0243805    .0543016
       black |  -.2516835   .0059262   -42.47   0.000    -.2632986   -.2400684
       asian |  -.1532059    .010698   -14.32   0.000    -.1741735   -.1322383
       other |   .0037332   .0137629     0.27   0.786    -.0232415    .0307079
  for_nonctz |   .0690471    .009355     7.38   0.000     .0507117    .0873824
     for_ctz |   .0011958   .0091152     0.13   0.896    -.0166696    .0190612
  pub_fedall |  -.0835431   .0116833    -7.15   0.000    -.1064419   -.0606443
   pub_state |  -.0200946   .0099876    -2.01   0.044    -.0396699   -.0005193
   pub_local |   .0178207   .0091373     1.95   0.051    -.0000882    .0357295
      member |   .1004165   .0059621    16.84   0.000     .0887309    .1121021
       size2 |   .0323756   .0077864     4.16   0.000     .0171145    .0476367
       size3 |  -.0500432   .0071599    -6.99   0.000    -.0640764   -.0360101
       size4 |   -.071865   .0066802   -10.76   0.000     -.084958    -.058772
       size5 |   -.074983   .0058215   -12.88   0.000    -.0863929   -.0635731
       size6 |  -.1243394   .0069097   -17.99   0.000    -.1378823   -.1107966
       size7 |  -.1948594    .006292   -30.97   0.000    -.2071916   -.1825272
          ma |  -.1047434   .0080807   -12.96   0.000    -.1205813   -.0889054
         enc |  -.0197372   .0075604    -2.61   0.009    -.0345553   -.0049191
         wnc |   .2110555   .0080334    26.27   0.000     .1953102    .2268007
          sa |  -.0340982   .0072184    -4.72   0.000    -.0482461   -.0199503
         esc |  -.0488014   .0097731    -4.99   0.000    -.0679563   -.0296464
         wsc |   .0946748   .0086934    10.89   0.000     .0776361    .1117136
          mt |   .2510905   .0083662    30.01   0.000      .234693    .2674879
         pac |   .1023092   .0079972    12.79   0.000     .0866351    .1179834
       _bi01 |   .0296265   .0448242     0.66   0.509    -.0582273    .1174803
       _bi02 |  -.0757931   .0641321    -1.18   0.237    -.2014898    .0499036
       _bi03 |  -.0703171   .0271061    -2.59   0.009    -.1234441   -.0171902
       _bi05 |  -.0547518   .0154506    -3.54   0.000    -.0850344   -.0244692
       _bi06 |   .0576325   .0186146     3.10   0.002     .0211486    .0941165
       _bi07 |  -.0081311   .0118179    -0.69   0.491    -.0312938    .0150317
       _bi08 |  -.0693388   .0117605    -5.90   0.000     -.092389   -.0462885
       _bi09 |   .0155639   .0148539     1.05   0.295    -.0135493    .0446772
       _bi10 |  -.0443609    .018615    -2.38   0.017    -.0808456   -.0078762
       _bi11 |  -.0865706   .0285486    -3.03   0.002    -.1425249   -.0306163
       _bi12 |  -.0395275   .0095133    -4.15   0.000    -.0581733   -.0208817
       _mi01 |  -.1461311   .0501489    -2.91   0.004    -.2444211   -.0478412
       _mi02 |   .0015236   .0564876     0.03   0.978      -.10919    .1122372
       _mi03 |   -.059679   .0225187    -2.65   0.008    -.1038149   -.0155431
       _mi05 |   .0071157   .0109957     0.65   0.518    -.0144354    .0286668
       _mi06 |  -.0507338   .0182949    -2.77   0.006    -.0865911   -.0148764
       _mi07 |  -.0365469   .0170634    -2.14   0.032    -.0699906   -.0031033
       _mi08 |  -.0906588   .0108072    -8.39   0.000    -.1118405   -.0694771
       _mi09 |  -.0245798   .0110925    -2.22   0.027    -.0463206   -.0028389
       _mi10 |  -.0347773     .00927    -3.75   0.000    -.0529463   -.0166084
       _mi11 |  -.0231902   .0135774    -1.71   0.088    -.0498013     .003421
       _mi12 |   -.170531   .0146313   -11.66   0.000    -.1992079   -.1418541
     _bocc01 |    .086697   .0120908     7.17   0.000     .0629994    .1103946
     _bocc02 |   .0432579   .0128286     3.37   0.001     .0181143    .0684015
     _bocc03 |   .0395334   .0171475     2.31   0.021      .005925    .0731419
     _bocc05 |  -.0027549   .0115648    -0.24   0.812    -.0254215    .0199117
     _bocc06 |  -.5008316   .0411845   -12.16   0.000    -.5815516   -.4201115
     _bocc07 |  -.0543243   .0327916    -1.66   0.098    -.1185945     .009946
     _bocc08 |   .0089724    .013365     0.67   0.502    -.0172225    .0351674
     _bocc09 |   .0083087   .0515717     0.16   0.872      -.09277    .1093873
     _bocc10 |   .0903664    .021112     4.28   0.000     .0489877    .1317451
     _bocc11 |   .1542577   .0176082     8.76   0.000     .1197462    .1887692
     _bocc12 |   .0067531   .0326072     0.21   0.836    -.0571558     .070662
     _bocc13 |    .124397    .024369     5.10   0.000     .0766346    .1721595
     _mocc01 |   .1468166   .0108792    13.50   0.000     .1254937    .1681395
     _mocc02 |   .0825342   .0108476     7.61   0.000     .0612732    .1037951
     _mocc03 |  -.0110707   .0126083    -0.88   0.380    -.0357826    .0136412
     _mocc05 |   .0670735   .0101328     6.62   0.000     .0472136    .0869334
     _mocc06 |   .2414722   .0556284     4.34   0.000     .1324425     .350502
     _mocc07 |  -.0112674   .0447803    -0.25   0.801    -.0990351    .0765004
     _mocc08 |   .0679374   .0384884     1.77   0.078    -.0074985    .1433733
     _mocc09 |   .1650032   .0151955    10.86   0.000     .1352206    .1947858
     _mocc10 |   .0821653   .0203448     4.04   0.000     .0422903    .1220403
      year99 |  -.1050132    .009119   -11.52   0.000    -.1228861   -.0871403
     year100 |  -.1747225   .0090221   -19.37   0.000    -.1924055   -.1570394
     year101 |  -.2053534   .0088753   -23.14   0.000    -.2227487   -.1879581
     year102 |  -.2074112   .0087451   -23.72   0.000    -.2245514    -.190271
     year103 |  -.2956824    .017522   -16.87   0.000    -.3300249   -.2613399
     year104 |  -.2970247   .0175615   -16.91   0.000    -.3314447   -.2626047
     year105 |  -.2752728   .0175856   -15.65   0.000    -.3097399   -.2408057
     year106 |  -.2650707   .0175986   -15.06   0.000    -.2995632   -.2305781
     year107 |  -.2647829   .0175823   -15.06   0.000    -.2992436   -.2303221
     year108 |  -.2516563   .0175993   -14.30   0.000    -.2861503   -.2171624
       _cons |    1.12441   .0204002    55.12   0.000     1.084427    1.164394
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.0689199    .006254   -11.02   0.000    -.0811774   -.0566623
-------------+----------------------------------------------------------------
         rho |   -0.18002
       sigma |  .38284039
      lambda | -.06891986    .006254
------------------------------------------------------------------------------

. 
. /* heckman two step with proxy in main equation */
. 
. heckman lrwage2 nspouseprox spouseprox ed_elem sch_9 sch_10 sch_11 sch_12 sch_some ed_assoc sch_ba sch_ma
>  sch_pro sch_phd exp expsq expcub expquar _msp _mnsp black asian other hispanic for_nonctz for_ctz  size2
>  size3 size4 size5 size6 size7 ma enc wnc sa esc wsc mt pac pub_fedall pub_state pub_local member _bi01-_
> bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc05-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 
> year99-year108 if female&(relhead < 4), select (feb march  nspouseprox spouseprox ed_elem sch_9 sch_10 sc
> h_11 sch_12 sch_some ed_assoc sch_ba sch_ma sch_pro sch_phd exp expsq expcub expquar _msp _mnsp hispanic 
> black asian other for_nonctz for_ctz pub_fedall pub_state pub_local member size2 size3 size4 size5 size6 
> size7 ma enc wnc sa esc wsc mt pac _bi01-_bi03 _bi05-_bi12 _mi01-_mi03 _mi05-_mi12 _bocc01-_bocc03 _bocc0
> 5-_bocc13 _mocc01-_mocc03 _mocc05-_mocc10 year99-year108) two

Heckman selection model -- two-step estimates   Number of obs      =    565387
(regression model with sample selection)        Censored obs       =    172309
                                                Uncensored obs     =    393078

                                                Wald chi2(96)      = 335346.99
                                                Prob > chi2        =    0.0000

------------------------------------------------------------------------------
     lrwage2 |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
lrwage2      |
 nspouseprox |   -.037689   .0090522    -4.16   0.000     -.055431   -.0199469
  spouseprox |   .0059519   .0029777     2.00   0.046     .0001158    .0117881
     ed_elem |  -.1654587   .0053645   -30.84   0.000    -.1759729   -.1549444
       sch_9 |  -.1628115   .0068448   -23.79   0.000    -.1762271    -.149396
      sch_10 |  -.1525265   .0057546   -26.51   0.000    -.1638052   -.1412478
      sch_11 |  -.1229041   .0051382   -23.92   0.000    -.1329748   -.1128335
      sch_12 |  -.0793144   .0072785   -10.90   0.000      -.09358   -.0650489
    sch_some |    .090636   .0018913    47.92   0.000     .0869291    .0943429
    ed_assoc |   .1729008   .0022685    76.22   0.000     .1684547    .1773469
      sch_ba |   .3311523   .0020559   161.08   0.000     .3271229    .3351817
      sch_ma |   .4922031   .0029047   169.45   0.000       .48651    .4978961
     sch_pro |   .7600996   .0056109   135.47   0.000     .7491024    .7710967
     sch_phd |   .7164504   .0061199   117.07   0.000     .7044556    .7284452
         exp |   .0470384   .0010992    42.79   0.000      .044884    .0491928
       expsq |  -.0022972    .000091   -25.24   0.000    -.0024757   -.0021188
      expcub |   .0000519   2.95e-06    17.62   0.000     .0000461    .0000577
     expquar |  -4.48e-07   3.21e-08   -13.97   0.000    -5.11e-07   -3.85e-07
        _msp |   .0102762   .0019811     5.19   0.000     .0063934     .014159
       _mnsp |  -.0035097   .0022313    -1.57   0.116    -.0078829    .0008635
       black |  -.0964546    .003692   -26.13   0.000    -.1036908   -.0892183
       asian |  -.0160015   .0042245    -3.79   0.000    -.0242813   -.0077216
       other |  -.0388638   .0044834    -8.67   0.000     -.047651   -.0300765
    hispanic |  -.0977592   .0026016   -37.58   0.000    -.1028583   -.0926601
  for_nonctz |  -.1590635     .00333   -47.77   0.000    -.1655902   -.1525368
     for_ctz |  -.0583031   .0033006   -17.66   0.000    -.0647721   -.0518341
       size2 |   .0654877   .0025164    26.02   0.000     .0605557    .0704198
       size3 |   .0949398   .0024416    38.88   0.000     .0901543    .0997253
       size4 |   .1254621   .0023592    53.18   0.000      .120838    .1300861
       size5 |   .1610989   .0020943    76.92   0.000     .1569941    .1652037
       size6 |   .2613985   .0027168    96.22   0.000     .2560737    .2667232
       size7 |   .2627655   .0030725    85.52   0.000     .2567434    .2687876
          ma |  -.0288727   .0031272    -9.23   0.000    -.0350019   -.0227434
         enc |  -.0606279   .0026327   -23.03   0.000    -.0657878    -.055468
         wnc |  -.0949237    .003401   -27.91   0.000    -.1015896   -.0882579
          sa |  -.0658619   .0025552   -25.78   0.000      -.07087   -.0608537
         esc |  -.1181454   .0034443   -34.30   0.000     -.124896   -.1113948
         wsc |  -.1408609   .0031153   -45.22   0.000    -.1469668    -.134755
          mt |  -.0509181   .0037278   -13.66   0.000    -.0582245   -.0436117
         pac |   .0267761    .002943     9.10   0.000     .0210079    .0325443
  pub_fedall |    .091623   .0041557    22.05   0.000      .083478    .0997681
   pub_state |  -.1632127   .0033525   -48.68   0.000    -.1697835   -.1566418
   pub_local |  -.1981597   .0030757   -64.43   0.000     -.204188   -.1921313
      member |   .1145766   .0022757    50.35   0.000     .1101163    .1190369
       _bi01 |  -.2333176   .0140699   -16.58   0.000    -.2608941   -.2057411
       _bi02 |   .1465255   .0206469     7.10   0.000     .1060583    .1869928
       _bi03 |  -.0596553   .0091261    -6.54   0.000    -.0775422   -.0417684
       _bi05 |   .0311976   .0052465     5.95   0.000     .0209146    .0414805
       _bi06 |  -.0692649   .0060717   -11.41   0.000    -.0811653   -.0573645
       _bi07 |  -.2776131   .0039389   -70.48   0.000    -.2853332    -.269893
       _bi08 |  -.0315424   .0040542    -7.78   0.000    -.0394885   -.0235964
       _bi09 |  -.0893731   .0049157   -18.18   0.000    -.0990077   -.0797384
       _bi10 |  -.1956829    .006237   -31.37   0.000    -.2079072   -.1834587
       _bi11 |  -.1858177   .0096945   -19.17   0.000    -.2048185   -.1668169
       _bi12 |  -.1327683   .0032133   -41.32   0.000    -.1390662   -.1264704
       _mi01 |  -.2383071   .0172558   -13.81   0.000    -.2721278   -.2044865
       _mi02 |   .1623526   .0181776     8.93   0.000     .1267251    .1979801
       _mi03 |  -.0647567   .0078241    -8.28   0.000    -.0800916   -.0494218
       _mi05 |  -.2026977   .0037566   -53.96   0.000    -.2100605   -.1953349
       _mi06 |  -.0107386   .0064149    -1.67   0.094    -.0233116    .0018344
       _mi07 |   .0089819   .0058678     1.53   0.126    -.0025188    .0204827
       _mi08 |  -.0411793   .0038797   -10.61   0.000    -.0487834   -.0335751
       _mi09 |  -.0513501    .003794   -13.53   0.000    -.0587863   -.0439139
       _mi10 |    -.14554   .0031796   -45.77   0.000    -.1517718   -.1393082
       _mi11 |  -.2778725   .0047009   -59.11   0.000    -.2870861    -.268659
       _mi12 |  -.2245298   .0056496   -39.74   0.000    -.2356027   -.2134569
     _bocc01 |   .1459535   .0041515    35.16   0.000     .1378166    .1540904
     _bocc02 |   .0883792   .0043112    20.50   0.000     .0799294     .096829
     _bocc03 |   .0894307   .0057375    15.59   0.000     .0781854     .100676
     _bocc05 |  -.0914966   .0039067   -23.42   0.000    -.0991535   -.0838397
     _bocc06 |  -.3006986   .0179564   -16.75   0.000    -.3358926   -.2655046
     _bocc07 |   .0325923   .0113379     2.87   0.004     .0103704    .0548143
     _bocc08 |  -.2060887   .0045255   -45.54   0.000    -.2149585   -.1972188
     _bocc09 |  -.1943914   .0164221   -11.84   0.000    -.2265782   -.1622047
     _bocc10 |  -.0538087   .0070263    -7.66   0.000    -.0675801   -.0400373
     _bocc11 |  -.2245129   .0059954   -37.45   0.000    -.2362636   -.2127621
     _bocc12 |  -.1145459   .0111125   -10.31   0.000     -.136326   -.0927659
     _bocc13 |  -.1899461   .0079551   -23.88   0.000    -.2055377   -.1743544
     _mocc01 |   .2257004    .004146    54.44   0.000     .2175743    .2338265
     _mocc02 |   .0877956    .003913    22.44   0.000     .0801264    .0954649
     _mocc03 |  -.1532587   .0044781   -34.22   0.000    -.1620355   -.1444818
     _mocc05 |  -.0328893   .0036553    -9.00   0.000    -.0400536    -.025725
     _mocc06 |  -.1252608   .0183078    -6.84   0.000    -.1611435   -.0893781
     _mocc07 |   .0822855   .0157301     5.23   0.000     .0514551    .1131158
     _mocc08 |   .1306205   .0134234     9.73   0.000      .104311      .15693
     _mocc09 |   -.154165   .0055427   -27.81   0.000    -.1650285   -.1433015
     _mocc10 |   -.135151   .0071292   -18.96   0.000    -.1491239   -.1211781
      year99 |   .0135157   .0030991     4.36   0.000     .0074416    .0195899
     year100 |   .0221364   .0034262     6.46   0.000     .0154212    .0288516
     year101 |   .0394653   .0035917    10.99   0.000     .0324257    .0465049
     year102 |    .055813   .0035526    15.71   0.000     .0488499     .062776
     year103 |   .0200609   .0067367     2.98   0.003     .0068572    .0332646
     year104 |   .0259769   .0067508     3.85   0.000     .0127456    .0392082
     year105 |    .018579   .0066462     2.80   0.005     .0055527    .0316054
     year106 |   .0157845   .0065978     2.39   0.017      .002853    .0287159
     year107 |   .0180782   .0065978     2.74   0.006     .0051468    .0310096
     year108 |   .0156575     .00654     2.39   0.017     .0028394    .0284755
       _cons |   2.346527   .0081057   289.49   0.000      2.33064    2.362414
-------------+----------------------------------------------------------------
select       |
         feb |   .1180443   .0065959    17.90   0.000     .1051165    .1309721
       march |    .130903     .00664    19.71   0.000     .1178887    .1439172
 nspouseprox |  -.6950031    .006453  -107.70   0.000    -.7076508   -.6823554
  spouseprox |  -.2306574   .0045585   -50.60   0.000     -.239592   -.2217228
     ed_elem |   .1600762   .0148658    10.77   0.000     .1309397    .1892127
       sch_9 |   .1276569   .0200441     6.37   0.000     .0883711    .1669426
      sch_10 |   .0797942    .016526     4.83   0.000     .0474039    .1121845
      sch_11 |   .0799414   .0148543     5.38   0.000     .0508276    .1090552
      sch_12 |   .0118676   .0205354     0.58   0.563     -.028381    .0521161
    sch_some |   .0381413   .0053339     7.15   0.000     .0276871    .0485955
    ed_assoc |   .0470621   .0064357     7.31   0.000     .0344484    .0596759
      sch_ba |   .0489183    .005753     8.50   0.000     .0376427    .0601939
      sch_ma |   .1107824   .0078708    14.08   0.000     .0953559    .1262089
     sch_pro |   .0287375   .0163786     1.75   0.079     -.003364     .060839
     sch_phd |   .1184659    .018242     6.49   0.000     .0827123    .1542195
         exp |  -.0229285     .00337    -6.80   0.000    -.0295337   -.0163234
       expsq |   .0003215   .0002774     1.16   0.247    -.0002222    .0008652
      expcub |   6.67e-06   8.80e-06     0.76   0.449    -.0000106    .0000239
     expquar |  -1.88e-07   9.41e-08    -1.99   0.046    -3.72e-07   -3.14e-09
        _msp |  -.0298802   .0058971    -5.07   0.000    -.0414382   -.0183222
       _mnsp |   .0487579   .0064884     7.51   0.000     .0360407     .061475
    hispanic |   .0393411   .0076331     5.15   0.000     .0243805    .0543016
       black |  -.2516835   .0059262   -42.47   0.000    -.2632986   -.2400684
       asian |  -.1532059    .010698   -14.32   0.000    -.1741735   -.1322383
       other |   .0037332   .0137629     0.27   0.786    -.0232415    .0307079
  for_nonctz |   .0690471    .009355     7.38   0.000     .0507117    .0873824
     for_ctz |   .0011958   .0091152     0.13   0.896    -.0166696    .0190612
  pub_fedall |  -.0835431   .0116833    -7.15   0.000    -.1064419   -.0606443
   pub_state |  -.0200946   .0099876    -2.01   0.044    -.0396699   -.0005193
   pub_local |   .0178207   .0091373     1.95   0.051    -.0000882    .0357295
      member |   .1004165   .0059621    16.84   0.000     .0887309    .1121021
       size2 |   .0323756   .0077864     4.16   0.000     .0171145    .0476367
       size3 |  -.0500432   .0071599    -6.99   0.000    -.0640764   -.0360101
       size4 |   -.071865   .0066802   -10.76   0.000     -.084958    -.058772
       size5 |   -.074983   .0058215   -12.88   0.000    -.0863929   -.0635731
       size6 |  -.1243394   .0069097   -17.99   0.000    -.1378823   -.1107966
       size7 |  -.1948594    .006292   -30.97   0.000    -.2071916   -.1825272
          ma |  -.1047434   .0080807   -12.96   0.000    -.1205813   -.0889054
         enc |  -.0197372   .0075604    -2.61   0.009    -.0345553   -.0049191
         wnc |   .2110555   .0080334    26.27   0.000     .1953102    .2268007
          sa |  -.0340982   .0072184    -4.72   0.000    -.0482461   -.0199503
         esc |  -.0488014   .0097731    -4.99   0.000    -.0679563   -.0296464
         wsc |   .0946748   .0086934    10.89   0.000     .0776361    .1117136
          mt |   .2510905   .0083662    30.01   0.000      .234693    .2674879
         pac |   .1023092   .0079972    12.79   0.000     .0866351    .1179834
       _bi01 |   .0296265   .0448242     0.66   0.509    -.0582273    .1174803
       _bi02 |  -.0757931   .0641321    -1.18   0.237    -.2014898    .0499036
       _bi03 |  -.0703171   .0271061    -2.59   0.009    -.1234441   -.0171902
       _bi05 |  -.0547518   .0154506    -3.54   0.000    -.0850344   -.0244692
       _bi06 |   .0576325   .0186146     3.10   0.002     .0211486    .0941165
       _bi07 |  -.0081311   .0118179    -0.69   0.491    -.0312938    .0150317
       _bi08 |  -.0693388   .0117605    -5.90   0.000     -.092389   -.0462885
       _bi09 |   .0155639   .0148539     1.05   0.295    -.0135493    .0446772
       _bi10 |  -.0443609    .018615    -2.38   0.017    -.0808456   -.0078762
       _bi11 |  -.0865706   .0285486    -3.03   0.002    -.1425249   -.0306163
       _bi12 |  -.0395275   .0095133    -4.15   0.000    -.0581733   -.0208817
       _mi01 |  -.1461311   .0501489    -2.91   0.004    -.2444211   -.0478412
       _mi02 |   .0015236   .0564876     0.03   0.978      -.10919    .1122372
       _mi03 |   -.059679   .0225187    -2.65   0.008    -.1038149   -.0155431
       _mi05 |   .0071157   .0109957     0.65   0.518    -.0144354    .0286668
       _mi06 |  -.0507338   .0182949    -2.77   0.006    -.0865911   -.0148764
       _mi07 |  -.0365469   .0170634    -2.14   0.032    -.0699906   -.0031033
       _mi08 |  -.0906588   .0108072    -8.39   0.000    -.1118405   -.0694771
       _mi09 |  -.0245798   .0110925    -2.22   0.027    -.0463206   -.0028389
       _mi10 |  -.0347773     .00927    -3.75   0.000    -.0529463   -.0166084
       _mi11 |  -.0231902   .0135774    -1.71   0.088    -.0498013     .003421
       _mi12 |   -.170531   .0146313   -11.66   0.000    -.1992079   -.1418541
     _bocc01 |    .086697   .0120908     7.17   0.000     .0629994    .1103946
     _bocc02 |   .0432579   .0128286     3.37   0.001     .0181143    .0684015
     _bocc03 |   .0395334   .0171475     2.31   0.021      .005925    .0731419
     _bocc05 |  -.0027549   .0115648    -0.24   0.812    -.0254215    .0199117
     _bocc06 |  -.5008316   .0411845   -12.16   0.000    -.5815516   -.4201115
     _bocc07 |  -.0543243   .0327916    -1.66   0.098    -.1185945     .009946
     _bocc08 |   .0089724    .013365     0.67   0.502    -.0172225    .0351674
     _bocc09 |   .0083087   .0515717     0.16   0.872      -.09277    .1093873
     _bocc10 |   .0903664    .021112     4.28   0.000     .0489877    .1317451
     _bocc11 |   .1542577   .0176082     8.76   0.000     .1197462    .1887692
     _bocc12 |   .0067531   .0326072     0.21   0.836    -.0571558     .070662
     _bocc13 |    .124397    .024369     5.10   0.000     .0766346    .1721595
     _mocc01 |   .1468166   .0108792    13.50   0.000     .1254937    .1681395
     _mocc02 |   .0825342   .0108476     7.61   0.000     .0612732    .1037951
     _mocc03 |  -.0110707   .0126083    -0.88   0.380    -.0357826    .0136412
     _mocc05 |   .0670735   .0101328     6.62   0.000     .0472136    .0869334
     _mocc06 |   .2414722   .0556284     4.34   0.000     .1324425     .350502
     _mocc07 |  -.0112674   .0447803    -0.25   0.801    -.0990351    .0765004
     _mocc08 |   .0679374   .0384884     1.77   0.078    -.0074985    .1433733
     _mocc09 |   .1650032   .0151955    10.86   0.000     .1352206    .1947858
     _mocc10 |   .0821653   .0203448     4.04   0.000     .0422903    .1220403
      year99 |  -.1050132    .009119   -11.52   0.000    -.1228861   -.0871403
     year100 |  -.1747225   .0090221   -19.37   0.000    -.1924055   -.1570394
     year101 |  -.2053534   .0088753   -23.14   0.000    -.2227487   -.1879581
     year102 |  -.2074112   .0087451   -23.72   0.000    -.2245514    -.190271
     year103 |  -.2956824    .017522   -16.87   0.000    -.3300249   -.2613399
     year104 |  -.2970247   .0175615   -16.91   0.000    -.3314447   -.2626047
     year105 |  -.2752728   .0175856   -15.65   0.000    -.3097399   -.2408057
     year106 |  -.2650707   .0175986   -15.06   0.000    -.2995632   -.2305781
     year107 |  -.2647829   .0175823   -15.06   0.000    -.2992436   -.2303221
     year108 |  -.2516563   .0175993   -14.30   0.000    -.2861503   -.2171624
       _cons |    1.12441   .0204002    55.12   0.000     1.084427    1.164394
-------------+----------------------------------------------------------------
mills        |
      lambda |  -.0035903   .0223202    -0.16   0.872     -.047337    .0401565
-------------+----------------------------------------------------------------
         rho |   -0.00945
       sigma |  .37976565
      lambda | -.00359027   .0223202
------------------------------------------------------------------------------

. 
. predict temp
(option xb assumed; fitted values)

. 
. replace selecthatcohead = temp if female
(672099 real changes made)

. 
. drop temp

. 
. 
. /* table 5 */
. 
. table female, contents(mean lrwage mean lrwage2 mean olshat mean selecthat)

--------------------------------------------------------------------------
   female |   mean(lrwage)   mean(lrwage2)    mean(olshat)  mean(select~t)
----------+---------------------------------------------------------------
        0 |       2.973455         2.98239        2.981065        3.068667
        1 |        2.78135        2.792252        2.790349        2.806398
--------------------------------------------------------------------------

. 
. table female if (relhead < 4), contents(mean lrwage mean lrwage2 mean olshatcohead mean selecthatcohead)

--------------------------------------------------------------------------
   female |   mean(lrwage)   mean(lrwage2)  mean(olshat~d)  mean(select~d)
----------+---------------------------------------------------------------
        0 |       3.041646        3.050915        3.056018        3.103884
        1 |       2.816328        2.826827        2.826929        2.827812
--------------------------------------------------------------------------

. 
. 
. log close
      name:  <unnamed>
       log:  C:\Imputations\Selection\forRESTAT\restatorg.log
  log type:  text
 closed on:  19 Oct 2011, 11:43:18
-----------------------------------------------------------------------------------------------------------
